Rela tionship between Mean Popula tion Density andWorm Hole ofH ylobite lus xiaoi Zhang in Sla sh Pine

PENG Long-hui; XU Yong-qing; WEN Xiao-sui

44 p lotswere set up in different slash p ine p lantations in J iangxi Province. The relationship between themean population density of Hylobitelus x iaoi and the mean worm hole in slash p ine were investigated and 5 functionswere found respectively. The results showed that the best suitable mathematics model could be described as: Y =0. 082x2 + 0. 2 216x + 0. 063, and the table of relationship between the mean population density of H. xiaoi and themean worm hole in slash p ine were established, which p rovided a simp ly method for number investigation andforecast of H. x iao in slash p ine p lantations.

1. College of Landscape Architecture and Art, J iangxi Agricultural University, Nanchang　330045, J iangxi, China

2. J iangxi Forest Pest and Disease Control Station , Nanchang　330077, J iangxi, China

Received Date: 2007-07-27

Abstract: 44 p lotswere set up in different slash p ine p lantations in J iangxi Province. The relationship between themean population density of Hylobitelus x iaoi and the mean worm hole in slash p ine were investigated and 5 functionswere found respectively. The results showed that the best suitable mathematics model could be described as: Y =0. 082x2 + 0. 2 216x + 0. 063, and the table of relationship between the mean population density of H. xiaoi and themean worm hole in slash p ine were established, which p rovided a simp ly method for number investigation andforecast of H. x iao in slash p ine p lantations.

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Reference (19)

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Rela tionship between Mean Popula tion Density andWorm Hole ofH ylobite lus xiaoi Zhang in Sla sh Pine

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