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(一)天等县近年来受玉米铁甲虫严重为害,损失很大。1963年,我们用药剂防治幼虫示范,效果很好。施过药的玉米地,90%以上的卵粒不能孵化,80—98%的初孵幼虫被杀死。药剂配合份量是:每亩用6%可湿性666粉7两至1斤,牛粪5—8斤,水100—150斤。先将药粉、牛粪和少量清水拌匀,再冲下一桶水成为原液。抓紧在幼虫孵化率达15—20%的时机施药,施用时将原液冲足定量的清水,用茅草扎成扫把,将药液均匀地
(1) Tianxian County is seriously damaged by corn iron beetle in recent years with great loss. In 1963, we used pesticides to control larvae demonstration, the effect is very good. Fertilized maize field, more than 90% of the eggs can not hatch, 80-98% of the newly hatched larvae were killed. Pharmacy with the weight is: 6% per mu with 666 wettable powder 7 two to 1 kg, cattle manure 5-8 pounds, water 100-150 pounds. First powder, cow dung and a small amount of water mix well, and then washed down a bucket of water to become a stock solution. Grasp the larvae in the rate of 15-20% of the time of spraying, when applied to the original liquid Chongchu quantitative water, tied with thatch broom, the liquid evenly