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一、大螟发生数量与水稻类型的关系我区自1977年开始推广种植杂交稻,截至1979年,三年种植面积依次为4万、120万和240万亩.大螟发生数量,据高邮、宝应、仪征等三县的统计,全年灯下的蛾量,三年依次为90、652和1568头,显示大螟发生量随着杂交稻面积的扩大而递增.产生这种情况,主要是由于杂交稻等大株型水稻有利于大螟的生长发育,取食这些类型水稻的虫体发育快,体型大,繁殖力强.
I. The Relationship between the Number of Stem Borer and the Type of Rice The hybrid rice has been popularized in our province since 1977. As of 1979, the three-year planted area is 40,000, 1,200,000 and 2,400,000 mu respectively. The number of Stem Borer occurred in Gaoyou, Baoying, Yizheng counties count the number of moths under the lights throughout the year, followed by three years of 90,652 and 1568, showing the occurrence of Stem Borer increases with the expansion of hybrid rice area.This happens, mainly As hybrid rice and other large-scale rice is conducive to the growth of Sesamia inferers, feeding these types of rice worms rapid development, body size, fertility and strong.