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本刊接到宁津县常洼公社钟楼张大队科学实验队、宁津县农林局杨中元同志等来稿,一致反映玉米打苞期去雄穗防治玉米螟增产显著,各地可以试用。现将他们的做法介绍如下: 1.去雄时间:在玉米打苞末期,即玉米雄穗只有1～2片叶包裹的时候去雄最为适宜。过早易减产,过晚起不到治虫的作用。
This publication was received Ningjin County depression depression commune Zhang brigades team of scientific experiments, ningjin County Agriculture and Forestry Bureau Yang Zhongyuan comrades and other contributions, a consistent reflection of the maize during the adventitious spike prevention and control of corn borer significant increase in production, around the trial. Now their approach is as follows: 1. To eradicate the time: In the end of the corn bud, that is, corn tassels only 1-2 leaves wrapped when the most suitable for male. Premature easy to reduce production, too late to play the role of pest control.