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为了避免喷洒有机磷和拟除虫菊酯类农药防治马尾松毛虫给天敌、生态环境等带来的不良影响,我们于1985年4月初在河南省信阳县谭家河乡,进行了一次飞机超低容量喷洒灭幼脲,防治越冬代马尾松毛虫试验,防治面积34,000亩,效果显著,成本低廉,为今后大面积防治森林害虫探索了新途径。现将试验结果分述于下。一、试验材料与方法1.药液配制:25%灭幼脲Ⅲ号胶悬剂稀释成1∶15.5—1∶7.3倍,每亩分别喷有效成分5、
In order to avoid spraying adverse effects of organic phosphorus and pyrethroid pesticides on natural enemies and ecological environment caused by Dendrolimus punctatus, we conducted an ultra-low capacity spraying of the aircraft in Tanjiahe Township, Xinyang County, Henan Province, in early April 1985. For the control of overwintering Dendrolimus punctatus, the control and control area of 34,000 mu are obvious, and the cost is very low, thus exploring new ways for large-scale prevention and control of forest pests in the future. Now the test results are described below. First, the test materials and methods 1. Preparation of liquid medicine: 25% of mefenal suspension No. Ⅲ diluted into 1:15.5-1: 7.3 times, respectively, spray active ingredients per acre 5,