• 中国中文核心期刊
  • 中国科学引文数据库(CSCD)核心库来源期刊
  • 中国科技论文统计源期刊(CJCR)
  • 第二届国家期刊奖提名奖

2012 Vol. 25, No. 1

Display Method:
Distribution Characteristics, Flowering and Seeding of Dendrocalamus sinicus in Yunnan, China
GU Zhi-jia, YANG Han-qi, SUN Mao-sheng, YANG Yu-ming
2012, 25(1): 1-5.
Abstract:
Dendrocalamus sinicus Chia et J. L. Sun is one of the endemic and the most important economic bamboo species in Yunnan Province, China. In order to protect and excavate the native germplasm resources of this species, 18 typical populations were investigated and the flowering and seeding of D.sinicus in Yunnan Province in the past years were analyzed. The results show that D.sinicus is narrowly distributed in Southwest Yunnan, with the distribution centre locates in the lower and medium mountain areas at the altitude of 1 000 1 500 m above sea level in Cangyuan, Ximeng and Menglian Counties, ranging in 22°09' 23°30'N, 98°56' 99°37'E. Meanwhile, from south to north within distributions, the culm type of D.sinicus shows an obvious trend as from bending-culmed, mixed type, to straight-culmed. The average diameter at the breast height is significantly and positively correlated with the altitude of populations. Sporadic flowering of D.sinicus was observed in the wild, especially for the straight-culmed type, while the seed setting was rare, and the seed setting rates were as low as from 0.34% to 0.64%, which may be mainly due to sporadic flowering of individual culms or clumps and protogynous flowers. Apis cerana Fabricius may be one of the important pollinators of D.sinicus.
Cryopreservation of Cell Line L-2/M delta 2-3 from Embryo of Drosophila melanogaster:The Effects of Cell Density on the Cytoactive
DING Wen-feng, FENG Ying, ZHANG Xin, LI Xian
2012, 25(1): 6-10.
Abstract:
In order to evaluate the effects of different cell density on post-thaw cytoactives ( including cell viability, recovery time, etc.) of insect cell line L-2/M delta 2-3 from embryo of Drosophila melanogaster Fallen, 10 test groups with different cell density (from 0.81×106 cells·mL-1 to 2.88×107 cells·mL-1, the density span of each group was more than 2.00×106 cells·mL-1 ) were prepared as the cryopreserved cultures preserved in liquid nitrogen separately during 14 months. The results showed that the post-thaw viability of each test group decreased with the cryopreservation time expended. The rate of post-thaw viability decline decreased with the cell density of cryopreserved cultures increased. Cultures frozen at above 1.3×107 cells·mL-1 could obtain a better effect of cryopreservation.
Height and Diameter Growth Modeling of Dahurian Larch Based on Nonlinear Mixed Model in Northeastern China
JIANG Li-chun, DU Shu-li
2012, 25(1): 11-16.
Abstract:
With the stem analysis data based on 80 sample trees from dahurian larch (Larix gmelinii Rupr.) plantations located in Daqingchuan Forestry Center of Dailing Forest Bureau in Heilongjiang Province, the Richards growth model was selected to model the height/age and diameter/age relationships of dahurian larch using NLME procedure of S-PLUS. Evaluation statistics, such as AIC, BIC, Log Likelihood and likelihood ratio test were used for precision analyzing and comparing of different models. The results indicated that Richards model with parameters b1 and b3 as mixed effects showed the best performance for both height-age relationships and diameter-age relationships. Correlation structures including first-order autoregressive correlation structure AR(1), moving average correlation structure MA(1) and autoregressive-moving average correlation structure were incorporated into the optimal height and diameter mixed models. AR(1) significantly improved the precision of mixed height model and MA(1) significantly improved the precision of mixed diameter model. Model validation showed that the mixed model with calibration of random parameters could improve the precision of prediction. Therefore, the application of the mixed model showed not only the mean trends of height and diameter prediction, but also the individual difference by calibrating random parameters using variance-covariance structure and correlation structure.
Acoustic Signals of Dendroctonus valens and Structure of Its Stridulatory Apparatus
WANG Hong-bin, ZHAO Li-wen, LUO Qian, ZHANG Zhen, KONG Xiang-bo
2012, 25(1): 17-22.
Abstract:
The bioacoustic signals often work alone or together with other signals like visual or olfactory signals in insect communication. The adult stridulatory signals of red turpentine beetle (RTB), Dendroctonus valens, were recorded and stored digitally after amplification in three experiments (glass phloem sandwich rearing, bolt rearing and directly field recording). The signals in different behavior were then analyzed by a specific acoustic software Adobe Audition and Matlab for echeme, duration, frequency, time domain and frequency domain analysis. The stridulatory apparatus of both male and female were observed by scanning electron microscope. The result showed that the frequency of the stridulatory sound by D. valens was from 3 kHz to 5.3 kHz, and there were clearly differences between the males and females, both in the sounds frequency and in apparatus structure. There were slightly differences with the signals recorded in different behavior, which proved the signals played a role in RTB behavior.
Effects of Nitrogen Application on the Growth and Photosynthetic Characteristics of Calophyllum inophyllum Seedlings
JIA Rui-feng, YIN Guang-tian, YANG Jin-chang, LI Rong-sheng, ZOU Wen-tao
2012, 25(1): 23-29.
Abstract:
A greenhouse pot experiment was conducted to study the growth and photosynthetic characteristics of Calophyllum inophyllum L. seedlings under different nitrogen fertilization levels (0, 50, 100, 150, 200, 300, 400, and 600 mg·seedling-1). It was indicated that the height, ground diameter, leaf area and biomass of C. inophyllum L. seedlings increased as the nitrogen fertilization increased from 0 to 200 mg·seedling-1 and then decreased with the nitrogen fertilization increased from 200 to 600 mg·seedling-1. The maximum values were 22.06 cm, 0.65 cm, 327.27 cm2 and 10.43 g·seedling-1, which were 1.59, 1.25, 2.58, and 1.90 times that of the CK respectively. For underground biomass, N5 was significantly higher than N7, N8, but there was no significant difference among the rest treatments. The root shoot ratio decreased with the nitrogen fertilization increased; Chlorophyll a, chlorophyll b and total chlorophyll increased with the nitrogen fertilization increased; The net photosynthetic rate, stomatal conductance, intercellular CO2 concentration and transpiration rate of C. inophyllum L. seedlings increased as the nitrogen fertilization increased from 0 to 200 mg·seedling-1 and then decreased with the nitrogen fertilization increased from 200 to 600 mg·seedling-1. The maximum values were 7.29 μmol·m-2·s-1, 0.071 mol·m-2·s-1, 220.22 μmol·mol-1and 1.34 mmol·m-2·s-1, which were 2.26, 1.92, 1.37 and 1.79 times that of the CK respectively. Statistical analysis indicated that the photosynthetic gas exchange parameters reached significant difference under different nitrogen treatments. Based on these data, it could be concluded that 200 mg·seedling-1 would be the optimal nitrogen amount for C. inophyllum L. seedlings in greenhouse. Key word: Calophyllum inophyllum L.; nitrogen fertilization; growth characteristics; photosynthetic characteristics
Phenotypic Diversity of Hybrids Progenies of Seabuckthorn and Selection
DUAN Ai-guo, ZHANG Jian-guo, LUO Hong-mei, LI Jian-xiong
2012, 25(1): 30-35.
Abstract:
In order to improve both the economic value and ecological adaptability of seabuckthom, Chinese Seabuckthorn (Hippophae rhamnoides ssp.sinensis) as female parent was crossed with Russian and Mongolian Seabuckthom (H.rhamnoides ssp. Mongolica) as male parent. The cross pollination was started in 2002.It was found that the phenotypic variations of hybrids progenies were obvious. The most important economical indices, such as numbers of thorns, 100-berry weight and berry yields, were found having the biggest phenotypic variations extent. Three hybrid individual trees were selected in 2009. Experimental results indicated that the selected 3 hybrids were significantly larger than the male parents in height and fewer thorns than the female parents. The 100-berry weight and berry yields of superior hybrids arrived respectively 26.33~29.33 g, and 2.00~ 2.50 kg, compared with female parent Chinese Seabuckthorn, improved by 31.34%~46.30%, 66.67%~108.33%. The hybrid progenies had an important variation law that the stems, having bigger growth quantities, had smaller berries and seeds, the phenomena were consistent with appearance characteristics of male and female parents.
Algorithm Derivation of Winter Facies Wind Protection of Shelterbelts Structural Parameters and Wind Permeability Coefficient
WANG Zhi-gang, REN Yu
2012, 25(1): 36-41.
Abstract:
To solve the problem in the absence of permeability algorithm in China's forestry industry standard "Technical Specification for Oasis Shelter Belt Construction (LY/T 1682—2006)", by defining and calculating the forest structural parameters-porosity β, stumpage surface porosity S', stumpage volume porosity V', aboveground surface area density C, aboveground bulk density W, the relations among these structural parameters and their relations with wind permeability coefficient α, shelterbelt width D and mean diameter of branch d were calculated, which is expressed as:W= V'/D = (1/4)dC= dS'/(4D) = (-πdlnβ)/(4D) =-(0.1πdlnα)/DIt is proofed that the main structural parameters have homogeneity and different structural parameters are of inheritance and consistency on the nature, there is no exclusivity in the strict sense, and is convertible under certain conditions, which is convenient for evaluating the wind-resistance effect of shelterbelt. A set of computational formulas for wind effect evaluation of farmland shelterbelt in dry and sandy area in northern China is derived.
Imapct of Kunyushan Web-spinning Sawfly Feeding on Growth of Japanese Red Pine
ZHU Yan-peng, SUN Zhi-qiang, ZHANG Xing-yao, LIANG Jun, ZHANG Ying-jun, TANG Xiao-juan
2012, 25(1): 42-47.
Abstract:
Forty permanent plots were selected at Kunyushan Forest Ecological Positioning Station, and taking the population density of Kunyushan web-spinning sawfly (Cephalcia kunyushanica) to represent the damage level of insect pest, the differences in mean DBH increment of Japanese red pine (Pinus densiflora) trees during the period of 2006—2008 on various plots and the growth difference of P. densiflora trees suffered from continuous feeding or intermittent feeding were analyzed and compared. Based on the results, the local and overall impact of C. kunyushanica's attack on P. densiflora stands were evaluated. The results showed that after continuous or intermittent feeding, there were significant differences in shoot length, and the difference in growth rate was also very significant. It was found that the growth of current year shoot was not affected by current year feeding while was affected by last year’s feeding. Current year shoot suffered significant length reduction when it had previously experienced high intensities of two successive attacks last year and the year before last. However, the DBH increment in various stands suffered from different sawfly populations showed no significant difference. This indicated that infestations of sawfly may have obvious impact on shoot growth in a short term while it might have little affection on persistence of whole pine stands. Thus, it is difficult to judge the affection of sawfly infestation on pine stands only by pine shoot growth in a short time.
Comparative Analysis of Salt Tolerance of Three Nitraria Species
NI Jian-wei, WU Xiang, ZHANG Hua-xin, LIU Tao, ZHANG Li
2012, 25(1): 48-53.
Abstract:
In this study, two-year-old Nitraria sibirica Pall., N. tangutorum Bobr. and N. roborowskii Kom. were used as plant material. Treated by five salt concentrations (0, 100, 200, 300 and 400 mmol·L-1 NaCl), the physiological and biochemical responses of these species under different salt stress were compared and analyzed. The results showed that low salt concentration promoted the growth of Nitraria and increased the biomass and chlorophyll content while decreased at high concentration. The chlorophyll contents of N. tangutorum, N. sibirica and N. roborowskii were the highest at 100 mmol·L-1 salt concentration, which were respectively 0.72, 0.78, and 0.61 mg·g-1; The biomass of N. tangutorum, N. sibirica and N. roborowskii were the lowest at 400 mmol·L-1 salt concentration, which were respectively 10.49, 12.42, and 10.19 g; Under salt stress, the maximum content of Na+/K+ was found in N. tangutorum. The Na+/K+ contents of N. sibirica were higher than the CK group, while that of N. roborowskii was lower than the CK group. With the salt concentration increased, the content of soluble sugar increased at initial and then decreased, and the soluble protein of all the three Nitraria species increased. In the low salt concentration, the MDA was higher than the CK group in the N. tangutorum and N. sibirica, while the N. roborowkii was the opposite. The activity of POD and SOD were higher under salt environment, the N. tangutorum had lowest POD activity while the N. roborowskii had the highest SOD activity. Three Nitraria species can maintan normal growth in saline environment.
The Accumulation Characteristics of Cd and Mineral Nutrition Element in Zoysia japonica under Cd2+ Treatment
LIU Jun-xiang, SUN Zhen-yuan, QIAN Yong-qiang, JU Guan-sheng, HAN Lei, ZHOU Xiao-xing
2012, 25(1): 54-57.
Abstract:
The accumulation characteristics of Cd and the effects of Cd2+ on mineral metabolism in Zoysia japonica were studied by hydroponic culture. In the leaves and roots, the proportion of Cd in cell wall was higher than that in cytosol, and the proportion of Cd in organelle was the lowest. Whereas in the stem of Z. japonica, the proportion of Cd in cytosol was higher than that in cell wall when the concentration of Cd2+ was low (1 mg·L-1 and 10 mg·L-1), the case was opposite when the concentration of Cd2+ reached 100 mg·L-1. The concentration of Cd in underground was significantly higher than that in aboveground when the concentration of Cd2+ was low (1 mg·L-1 and 10 mg·L-1). However, when the concentration reached 100 mg·L-1, the concentration of Cd in aboveground was significantly increased by 37.31% compared with that in underground, and the transferring index was significantly increased by 4.12 and 2.45 times compared with 1 mg·L-1 and 10 mg·L-1. In underground part, the N, K, Ca and Mg contents decreased, while the P and S contents increased. In aboveground part, the contents of P, K and S decreased, and the contents of N, Ca and Mg increased.
Study on the Sap Flow Characters of Two Old Trees of Cryptomeria fortunei on Tianmu Mountain
JIANG Wen-wei, TANG Fu-bin, LIU Zhi-mei, ZHAO Ming-shui
2012, 25(1): 58-64.
Abstract:
From April to August in 2010, the stem sap flow of two old trees of Cryptomeria fortunei which grow in the National Natural Reserve of Mount Tianmu was continuously detected with the thermal dissipation probe (TDP). The aim of this study was to evaluate the diurnal and seasonal variation of stem sap flow velocity and the change of water consumption of C.fortunei, as well as to analyze how environmental factors were affecting the stem sap flow of C.fortunei. The results showed that, in different season, the diurnal variation of stem sap flow velocity of C.fortunei presented a single-peaked curve, but there were some differences in starting time, peak time and rapid-falling time. The stem sap flow density had a positive relation with photosynthetic active radiation (PAR), air temperature, and vapor pressure deficit (VPD) while a negative relation with relative humidity and CO2 significantly. Both the stem sap flow velocity and average daily water consumption increased with the increase of tree’s diameter, but the stem sap flow density had no such trait. The changes of average daily water consumption of two trees with a diameter of 75.6 cm and 62.8 cm had the same ecological process, the lowest water consumptions were (49.356±14.883) kg and (9.531±4.297) kg in June and the highest were (110.022±21.890)kg and (49.352±2.629)kg in April respectively.
Absorption and Accumulation of Heavy Metal from Soil by Leaves of Populus×euramericana cv. ‘Neva’Plantation
LI Jin-hua, HE Yan, DUAN Jian-ping, ZHANG Qi-wen
2012, 25(1): 65-70.
Abstract:
The absorption and enrichment of heavy metal elements by leaves of Populus×euramericana cv. ‘Neva’were analyzed through content assessing of heavy metal elements in soils of three forest lands at Fangshan District in the southern suburb of Beijing. These forest lands with P.×euramericana cv.‘Neva’plantation were around with the various sources of pollution such as cement mill, stone mill, sewage and garbage. Some of heavy metal elements such as Cd, Pb, Cu, and Zn were found in the soil samples and leaves of P.×euramericana cv. ‘Neva’grown on the three forest lands which were investigated. The results of investigation showed that the soils of three forest lands were polluted with Pb, Cd, Cu and Zn in varying degrees. The contents of Pb, Cu and Zn in soils were significantly different among the three forest lands, whereas the average content of Cd (0.077 6 mg·kg-1) was less but that of Pb, Cu, and Zn (37.61, 26.25 and 90.3 mg·kg-1) were more than the average background value of Beijing. The contents of Pb, Cd, Cu and Zn in leaves of P.×euramericana cv. ‘Neva’were different among three forest lands. With the changes of heavy metal contents in soil samples, there was no regularity on the changes of different heavy metal contents in leaves of P.×euramericana cv. ‘Neva’grown on different forest land. P.×euramericana cv. ‘Neva’can absorb and accumulate Pb, Cd, Cu and Zn in soil but showed different capacities of absorption and accumulation with the order of Cd> Zn> Cu> Pb. Especially, its absorption and accumulation capacity for Cd was strong with maximum enrichment factor higher than 16 and showed high accumulation on low background, whereas its enrichment capacities for Pb and Cu were relatively poorer with average enrichment factor of less than 1. At different forest lands, there existed great difference on absorption capacity of P.×euramericana cv. ‘Nev’ with the same heavy metal.
Biomass Distribution Pattern of Different Parts of Pinus Yunnanensis with Different Diameter Class
SUN Bao-gang, CHEN Fei, WANG Jian-min, CHEN Xiao-ming, YANG Zi-xiang, CAI Xue-yong, LI Bin
2012, 25(1): 71-76.
Abstract:
The normal tree method was used to measure the biomass of Pinus yunnanensis and its distribution pattern with different diameter class in Tianzimiaopo Forest Farm, Nanhua County, Yunnan Province. The results indicated that the biomass was positively correlated with the diameter class. For the diameter class of 5~7.5 cm, the individual biomass was(6.642±1.129)×103 g, for the diameter class of 7.6~12.5 cm, it was(2.533±0.387)×104 g, for the diameter class of 12.6 17.5 cm, it was (5.897±1.331)×104 g, for the diameter class of 17.6~22.5 cm, it was (1.063±0.211)×105 g, and for the diameter class above 22.6 cm, it was (2.208±0.409)×105 g. There existed some changes in the biomass distribution among P. yunnanensis’ organs with different diameter class. With the increase of diameter, the biomass proportion of stem and root decreased in initial stage and then increased, that of branch and needle increased in the initial stage and then decreased, while that of bark decreased. The biomass proportion of stem was the largest in layer of 0~2 m, which accounted for 27.62% of total biomass and that of the branch and needle were the largest in the layer of 6~8 m, which accounted respectively for 35.85% and 38.34% of the total biomass. Approximately 65.49% of total root biomass of P. yunnanensis distributed in the surface layer of 0~30 cm, and 34.51% in the other layers. Key word: Pinus yunnanensis;plantation;biomass;distribution
Research on Quantitative Classification of Native Persimmon Varieties in Zhejiang Province
ZHAO Xian-min, GONG Bang-chu, WU Kai-yun, CHEN Hong-xing, LV Xian-liang, WANG Nian-jin
2012, 25(1): 77-87.
Abstract:
The phenotype analysis and quantitative classification were carried on 76 native persimmon varieties of Zhejiang Province. The results showed that the descriptive traits took on diversification, and fruit, leaf, branches and other tissues or organs had rich variation on morphological characteristics. The coefficient of variation of quantitative traits was ranged from 0.11 to 0.88, which showed higher variation. The results of classifying the quantitative traits on the native persimmon showed that when taking the fruit weight of 81 g and 123 g as the division points, the small weight fruit accounted for 30%, the large weight fruit for 30%, and the middle weight fruit for 40%; when taking the fruit shape index of 0.9 and 1.1 as the division points, the flat-shaped fruit accounted for 30%, the round-shaped fruit for 40%, and the long-shaped fruit for 30%. With the principal component analysis on phenotype indicator, all the first four principal components could be summarized as comprehensive factors. The first, second and fourth principal components were respectively summarized as fruit integrated factor, leaves integrated factor, and branches integrated factor, and the third principal component was mainly related with the fruit characters. The indicators of low contribution could be removed to achieve the target of indicator optimization. The Q cluster analysis was carried with those optimization indicators, and each group had different feature on different division line and threshold value, and the clustering results were consistent with the traditional morphological classification of persimmon, and the Jinzaoshi persimmon series and other persimmons could be clearly divided into two groups. The R cluster analysis showed that many fruit characters were clustered as a group, and branches, leaves and other traits had not obvious rule to follow, but it was found that some phenotypic traits associated with persimmon vegetative growth were clustered as a group. The paper also resolved the problem of homonym and synonym, and by observation and cluster analysis, it was confirmed that in fact, the 76 native persimmon varieties belong to 68 native persimmon varieties.
Identification and Genetic Variation Analysis of Armeniaca cathayana Hybrids
LIU Meng-pei, FU Da-li, LI Fang-dong, FU Jian-min, TIAN Min, LIANG Chen
2012, 25(1): 88-92.
Abstract:
With six hybridized combinations of Armeniaca cathayana as experimental materials, the SSR molecular marker technology was used to identify hybrids through amplification polymorphism bands and 6 primers with parent complementary belt type were screened. Most of the hybrids were identified as true hybrids except two. In addition, the genetic relationship and genetic variation analysis results showed that all the hybrid combination displayed high consistency and not significant genetic diversity was found. When choosing X1 as male parent and H1 or H3 as female parent, the differences of hybrids were significant. The results of hybrid identification and genetic variation analysis can be used in future's hybrid parents breeding, genetic linkage map construction and QTL mapping of important character of A. cathayana.
Cloning and Expression Analysis of Chalcone Isomerase Gene cDNA from Camellia nitidissima
ZHOU Xing-wen, LI Ji-yuan, FAN Zheng-qi
2012, 25(1): 93-99.
Abstract:
A full-length cDNA sequence of chalcone isomerase (CHI) gene was obtained from petals of Camellia nitidissima using the methods of Reverse Transcription PCR and RACE,named Cn-CHI (GenBank accession No. HQ269805.1). Sequence analysis indicated that Cn-CHI is 953bp in full length and contains a 5'-untranslated region (5'-UTR) of 56 bp,a 3'-UTR of 204 bp,and an opening reading frame (ORF) of 693bp encoding a 230 predicted amino acids. Sequence alignment of amino acids revealed that Cn-CHI shared more than 75% homology with CHI from plants of Rosaceae, Ericaceae, Solanaceae and 99% homology with C. sinensis. Relative real-time PCR analysis indicated that Cn-CHI showed the tendency of a sharp increase at the early stage and then decreased slowly; the highest transcript abundance in carpels, and the second in stamens, the transcript of Cn-CHI in sepals and petals were almost at the same level.
Progress in the Study on Response of Arid Zones to Precipitation Change
ZHU Ya-juan, WU Bo, LU Qi
2012, 25(1): 100-106.
Abstract:
The pattern of precipitation, including precipitation amount, frequency and intensity, may change in the future according to the prediction of climate change. In arid zones, the soil dynamics, plant growth and vegetation change, desertification and hydrology might be affected by precipitation change. In general, the precipitation in extreme arid zone and arid zone showed an increase tendency whereas the precipitation in some area in semi-arid zone and sub-humid arid zone showed a decrease tendency. The increase of precipitation could enhance the growth of biological soil crust, improve soil water status, promote plant growth, increase vegetation coverage, facilitate the change from desert vegetation to grassland vegetation, and it is benefit to the reversion of land desertification. In addition, the increase of precipitation could also increase the river runoff, lake storage and promote the occurrence of flood, while the decrease of precipitation has the adverse effect. These studies will benefit the prediction of the possible response of ecosystem processes to the potential change of precipitation pattern in arid zones in the future, and it is important to the conservation of natural vegetation and the control of desertification. More field experiments and studies should be conducted in the future, including the effect of increased precipitation or temperature, nitrogen deposition and CO2 on soil, vegetation, desertification and hydrology of arid zones, so as the more persuasive results could be obtained from these experiments and studies.
Effect of Amelioration of Takyr Solonetzs with FGDG on Rhizosphere Soil Properties and Root Growth of Lycium barbarum
SUN Zhao-jun, ZHAO Xiu-hai, WANG Jing, LI Qian, MA Fei, CHEN Chang-he, LI Yan
2012, 25(1): 107-110.
Abstract:
In this study, the rhizosphere soil properties of Takyr Solonetzs ameliorated with FGDG, and its effect on root growth of Lycium barbarum were studied. The results indicated that with increasing applications of FGDG, the contents of Na+, K+, Mg2+, Cl-, and HCO3- in rhizosphere soil decreased gradually with the ratio of 51.9%, 16.7%, 42.7%, 44.7% and 28.2%, respectively, while the contents of Ca2+ and SO42- showed an increasing trend and increased by 96.9% and 80.4% compared with those of the CK. As the content of exchangeable Na+ decreased with the increasing application of FGDG, the exchangeable sodium percentage (ESP) and soil pH values decreased from 32.2% and 10.5 to 18.1% and 7.82, respectively and thus the soil physical properties improved. However, the lowest total salt content (2.91 g·kg-1) was found in T2 (2.5 t/(667m2)), and similarly, the highest values of taproot length (44.78 cm), root surface area(179.97 cm2) and root dry weight (17.53 g) were also found in T2, which suggested that applications of FGDG were not always positively correlated with soil reclamation, and excessive amount of FGDG would inhibit root’s growth. Overall, application of FGDG is effective in ameliorating Takyr Solonetzs, but high amount of FGDG would result in excess salts against root growth and subsequently influence production.