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我们在一九七一年六月下旬用25％DDT 乳油进行了水稻灭蚊幼的试验。参加试验的还有红光区农场技术员同志。现将结果简报如下。方法:分两组试验。甲组:选1.2亩一块水稻田约924平方米,水深约1寸左右,水的 pH 值为7.0,施药量为每亩50毫升,每平方米投药纯 DDT 为19毫克。施药方法是将药液稀释后放入水桶内,用一塑料管导出,随放水于稻田时缓缓滴入。
We conducted a young rice anti-mosquito experiment with 25% DDT EC in late June 1976. Participants in the trial are Red Zone farm technician comrades. The result is now as follows. Methods: Two groups of experiments. Group A: Select 1.2 acres of a paddy field of about 924 square meters, water depth of about 1 inch, water pH 7.0, the application rate of 50 ml per mu, per square meter of pure DDT administration of 19 mg. Application method is to dilute the liquid into the bucket, with a plastic tube export, with the water slowly dripped in the paddy fields.