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为了探讨内吸剂农药的使用技术,1979——1981年我们进行了久效磷加聚乙烯醇涂茎防治棉铃虫的试验和示范,经过室内毒性测定,田间试验和近万亩示范防治效果证明,单株涂药20—30毫克,每高峰涂茎—一次能有效地控制危害,且兼治伏前蚜、盲蝽象等害虫。 一、药剂:5％久效磷乳油,青岛农药厂产品;聚乙烯醇(固体),北京有机化工厂产品。 二、方法:1.久效磷聚乙烯醇液剂的配制:首先将聚乙烯醇一两溶化于3斤沸水中,待冷凉后再加入50％久效磷乳油一斤,边倒边搅拌,使其充分混合均匀即成。2.涂茎方法:棉田一代棉铃虫发生期,用涂茎器在棉茎一侧第一果枝下涂药长约1.5—2寸,单株涂药20—30毫克。3.药效检查:室内药效测定,田间药效试验,均设不施药或喷洒常规农药为对照,试验前
In order to explore the use of endosulfan pesticides, we conducted experiments and demonstrations on the control of cotton bollworm with monocrotophos and polyvinyl alcohol in 1979-1981. After indoor toxicity test, field experiment and demonstrative control effect of nearly 10,000 mu , Single coating 20-30 mg, each peak coating the stem - one can effectively control the harm, and both governance prev such as aphids, lizards and other pests. First, the agent: 5% monocrotophos, Qingdao Pesticide Products; polyvinyl alcohol (solid), Beijing Organic Chemical Products. Second, the method: 1. monocrotophos polyvinyl alcohol solution preparation: first polyvinyl alcohol dissolved in one or two pounds of boiling water until cool and then add 50% monocrotophos pound, while pouring edge stirring , To make it fully mixed Serve. 2. Drip stalk method: Cotton field generation of cotton bollworm occurs, with a stem applicator on the side of the first fruit stems on the side of the cotton coating length of about 1.5-2 inches, 20-30 mg single plant coating. 3. Efficacy test: indoor efficacy test, field efficacy test, are set without spraying or spraying conventional pesticides as a control before the test