杨树溃疡病测报方法的初步研究

›› 1992, Vol. 28 ›› Issue (2): 122-127.

• 论文及研究报告 • Previous Articles Next Articles

A PRELIMINARY STUDY ON PREDICTION METHOD FOR POPLAR CANKER

Yang Chuanhe,Yang Wang,Zhou Zhongming

Institute of Food Safety Control and Inspection, Ministry of Public Health;Beijing Forestry University

Received:1990-11-22 Revised:1900-01-01 Online:1992-03-25 Published:1992-03-25

Abstract

Abstract: According to the rules of development of poplar canker, caused by Dothiorella gregaria Sacc., the multivariant linear stepwise regression prediction model was established using method of multivatiant statistics with factors as disease index (Dis), pathogens (F₁, F₂, F₃), collect temperature(CT), ratio of temperature to relative humidity (TH), ratio of temperature to raina ll(TR) and ratio of relative humidity to rainfall (HR):Dis=19.0-F₃^1/2.8+0.1F₁+0.0015(F₂)³+4.15TH-CT^1/0.042-0.4HR+1.5TR.The disease index of the following a month could be predicted with this equation what was proved to be reliable by examination using actual disease index obtained in the survey.

Key words: Poplar canker, Forecast, Multivariant linear stepwise model

Yang Chuanhe;Yang Wang;Zhou Zhongming. A PRELIMINARY STUDY ON PREDICTION METHOD FOR POPLAR CANKER[J]. , 1992, 28(2): 122-127.

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A PRELIMINARY STUDY ON PREDICTION METHOD FOR POPLAR CANKER

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