Forecast Technology Research of Wheat Powdery Mildew Comprehensive Occurrence Degree in Henan Province
LI Tongxiao
Abstract：Based on the wheat powdery mildew investigation data and corresponding meteorological data from 1991 to 2010 in Zhenping county and Yichuan county, from 1991 to 2000 in Anyang county and Xiangcheng city,the meteorological factors affecting wheat powdery mildew occurrence degree were ana-lyzed,and Henan wheat powdery mildew regional and comprehensive forecasting models were built.The result showed that the wheat powdery mildew occurrence degrees of Zhenping, Yichuan, Anyang and Xiangcheng were all related to the relative humidity in March and the temperature and rainfall coefficient in late March last year,and the correlation coefficients of the four stations all passed significance test ofα=0.01.Henan wheat powdery mildew regional and comprehensive forecasting models were built using these two factors.Using the regional models to forecast the wheat powdery mildew occurrence degrees of the four stations in 2012,the forecasting degrees of three stations were the same as the real situation,and the other one had one degree of error,so the results were all in specified range.The comprehensive model was used to forecast the wheat powdery mildew occurrence degrees of Henan in 2011 and 2012,and the forecasting accuracy rate was 100%.The models can forecast the wheat powdery mildew occurrence de-gree in parts and all of Henan, and provide references for holding the wheat powdery mildew occurrence degree globally.
Keywords：wheat powdery mildewcomprehensive occurrence degreeforecastingmeteorological fac-torHenan province
Publication Date：2015-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 54-57,76 )