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及时春耕沤田是消灭越冬螟虫最有效的一项措施;但二化螟在浸水后大部分会逃出禾蔸外。一般推测被天敌消灭了不少,到底天敌起到了多大的作用?漏网的幼虫又究竟有多少?逃出后躲在什么地方?是否能继续羽化?因此,对春季耕沤防治二化螟的作用存在着不同的疑问,主张在二化螟占优势的地区似乎祇有拔毁禾蔸才能解决问题。为了摸清这一情况,笔者在宜春农业试验站曾作了大田耕沤观察,茲将观察的初期结果摘要叙述于下,以供参考。
Timely plowing Tian Tian is the most effective measures to eliminate winters stem borers; however, most of the stem borers in the water after flooding will escape outside Wo. Generally presumed to be eliminated by a number of natural enemies, in the end natural enemies played a big role? How many net slippage larvae? Escape hiding where? Is it possible to continue emergence? Therefore, the spring tillage prevention and control of Chilo suppressalis There are different questions, claiming that in the area where the stem borer is dominant, it seems that the problem can only be solved by pulling the straw. In order to find out the situation, the author made a field observation at the Yichun Agricultural Experimental Station. The summary of the initial results of the observation will be described below for reference.