山东省麦红吸浆虫发生环境的初步分析

本初步分析丁山东省麦红吸浆虫发生的环境条件．结果表明．毗邻四省是麦红吸浆虫的高发区．为扩散到我省提供了虫源条件．鲁南各有虫县常年的4月上旬～5月上旬的温度和麦田湿度有利于麦红吸浆虫的化蛹和羽化．麦红吸浆虫成虫峰期和小麦抽穗期相吻合．为麦红吸浆虫产卵提供了条件．小麦品种混杂，增加了田间感虫机会．地膜蒜地形成了麦红吸浆虫的早期虫源．田间种群数量的积累．666停用后没有很好的替代土壤处理药剂．也是有利于麦红吸浆虫发生的条件．

A PRELIMINARY ANALYSIS ON THE OCCURRING CONDITIONS OF SITODIPLOSIS MOSELLANA IN SHANDONG PROVINCE

The occurring conditions of Sitodiplosis mosellana in Shandong Province is preliminarily analysed in this paper.The rampant areas of Sitodiplosis mosellana in four neighbour provinces provide the pest sources for Shandong Province.Temperature and hu- midity in wheat field during the first 10 days of April to that of May benefit pupation and eclosion of Sitodiglosis mosellana in south Shandong.Coincidence of peak stage of Sitodiplosis mosellana adult with wheat heading stage provides good condition for ovipositing of Sitodiplosis mosellana.Planting mixed varieties increases opportunity of the pest to attack the crop.Early source of the pest is from garlic fields with ground plastie film.It is also im- portant occurring factor of Sitodiplosis mosellana that the pest population accumulates in wheat fields and it is no proper substitute for soil insecticide 666.