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适时春灌,淹死越冬螟虫。萧山县1964年春耕灌水在谷雨以前结束(比1963年提早五天),第一代螟蛾发生量比1963年减少86％。 乐清县1964年春耕灌水,在三化螟发螟始盛期(4月23日至24日)结束,越冬螟虫80％不能羽化。 冬季治虫,减少虫源。黄岩县1963年冬季结合积肥,全面掘毁草子留种田的稻根,使越冬三化螟由原来每亩634条减少到55条。1964年三化螟全年发蛾量比1963年减少90％。
Timely irrigation, drowning overwintering stem borers. Xiaoshan County Spring irrigation in 1964 ended before Guyu (five days earlier than in 1963). The first generation of moths was reduced by 86% from 1963. Yueqing County, spring irrigation in 1964, the beginning of the first bloom of the stem borer (April 23 to 24) ended, overwintering stem borer 80% can not be feathered. Winter worm, reduce insect source. In the winter of 1963, Huangyan County combined with fertilizer to fully destroy the rice root of the grass-leaved farm so that the overwintering stem borer was reduced from 634 to 55 per mu. In 1964, the annual incidence of barramundi was reduced by 90% from 1963.