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长留公社高仁一队棉田,1977年地老虎发生比较严重,经喷布1,000倍90％敌百虫和250倍25％滴滴涕乳剂混合液,对消灭其幼虫起了一定作用。但由于防治工作不够细致,仍有相当数量没有杀死。夏收期间,地老虎逐渐长大,食量剧增,为害严重。因其昼伏夜出,用药防治很难凑效。每天早晨采用人工挖土捉虫,虽然办法可靠,但很费工,在三夏大忙期间不好安排。根据地老虎喜在桐树叶下栖息和取食的特性,我们对桐树叶诱集地老虎幼虫的效果进行了试验。6月12日傍晚,首先在0.8亩棉田摆放桐树叶70片,13日早晨共捕捉地老虎幼虫209头(其中二令6头,三令42头,四令79头,五令46头,六令36
Long stay commune Gao Ren a team of cotton fields, in 1977 to more serious occurrence of tigers, by spraying 1,000 times 90% trichlorfon and 250 times 25% DDT emulsion mixture, to eliminate its larvae played a role. However, due to the lack of meticulous prevention and control, a considerable number of them have not been killed. Summer harvest period, the gradual growth of tigers, appetite soared, serious damage. Because of its nocturnal, drug prevention and control is not effective. Using artificial digging worms every morning, although the method is reliable, but it is laborious, not good arrangements during the busy summer of three summer. According to the characteristics of the tiger hippophaeus perching and feeding under the tung leaves, we tested the effects of the tiger larvae on the tung tree leaves. On the evening of June 12, 70 tons of tung tree leaves were first placed in 0.8 mu of cotton fields and 209 tiger larvae were caught on the morning of the 13th (including two orders, 42 orders, 79 orders, 46 orders, Six orders 36