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Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (12): 1592-1594.

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Application of latent root regression method in analysis of predation of predatory natural enemy in paddy field

TANG Jinlong, WU Jincai   

  1. Yangzhou University, Yangzhou 225009
  • Received:2001-01-04 Revised:2001-05-31 Online:2002-12-15

Abstract: Alatent root regression model was constructed for analyzing the predation quantity in a coexistence system of four spiders (Pirata subpiraticus,Oedothorax insecticeps,Clubiona japonicola, and Bianor hotingchiehi) with brown planthopper (Nilaparvata lugens). The predation quantity of the spiders in a multi species coexistence system could be predicted by y= 6.6600 +6.3399(-0.0138X1* +0.0895X2*+0.0078 X3* -0.1067X4* +0.6742X5*). The result showed that compared to LSregression, the accuracy of predation quantity predicted by the model increased by 10%.

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