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Influence of Limestone Powder Doses on Growth of Schima superba in Pinus massoniana Plantation in the Acid Rain Region of Chongqing, China

  • Received Date: 2009-05-23
  • An evaluation of the impact of scattering limestone powder on acidified soil surface on the growth of young trees of Schima superba under crowns of a Pinus massoniana plantation (three years and four months after treatment) were made by a long-term field fixed position experiment, which was conducted in the Tieshanping Forest Farm of Chongqing City in 2004. The randomized complete block experiment had five treatments and three replicates: the doses of one-time scattering of 0 (control), 1, 2, 3 and 4 t·hm-2 finely ground limestone respectively. The effect was significant: surface limestone could ameliorate health condition of the young trees of S. superba and among them the optimum dose was 2 t·hm-2. The mean canopy thickness, crown size, height and diameter of the base at 20 cm above the ground of the young trees of S. superba treated by 2 t·hm-2 increased by 96.84%, 52.68%, 77.47% and 61.19% respectively (P<0.05) compared to the control.
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Influence of Limestone Powder Doses on Growth of Schima superba in Pinus massoniana Plantation in the Acid Rain Region of Chongqing, China

  • 1. College of Agriculture, He’nan University of Science and Technology, Luoyang 471003, He’nan, China
  • 2. Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry
  • 3.  Key Laboratory of Forest Ecology and Environment, State Fores
  • 4. Meteorological Bureau of Mengjin County, Mengjin 471100, He’nan, China
  • 5.  Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Beijing 100091, China
  • 6. Kunming Survey and Design Institute of State Forestry Administration, Kunming 650216, Yunnan, China

Abstract: An evaluation of the impact of scattering limestone powder on acidified soil surface on the growth of young trees of Schima superba under crowns of a Pinus massoniana plantation (three years and four months after treatment) were made by a long-term field fixed position experiment, which was conducted in the Tieshanping Forest Farm of Chongqing City in 2004. The randomized complete block experiment had five treatments and three replicates: the doses of one-time scattering of 0 (control), 1, 2, 3 and 4 t·hm-2 finely ground limestone respectively. The effect was significant: surface limestone could ameliorate health condition of the young trees of S. superba and among them the optimum dose was 2 t·hm-2. The mean canopy thickness, crown size, height and diameter of the base at 20 cm above the ground of the young trees of S. superba treated by 2 t·hm-2 increased by 96.84%, 52.68%, 77.47% and 61.19% respectively (P<0.05) compared to the control.

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