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1983年6月中、下旬,在沙湾县农业科学实验站,对氧化乐果、敌杀死(即溴氰菊酯)等药剂进行了大田药效试验、示范。试验结果如下: (1)用40％氧化乐果乳油,亩用药量50毫升;或50％甲胺磷乳油,亩用药量40毫升(有效成分皆为20克/亩),采用喷雾法防治棉花蚜虫,具有良好的防治效果,特效期可达7天以上。 (2)用2.5％敌杀死乳油,亩用药量分别为20、30和40毫升(按有效成分计算为0.5、0.75和1.0克),施药后24～48小时检查,虫口下降率与防治效果都达95％以上。但亩用量20毫升,特效期较短,施药后第7天检查,虫口下降率与防治效果只有75.5％和72.87％。而亩用药量30％毫升和40毫升,施药后第7天虫口下降率与防治效果仍达96％以上。
Mid-to-late June 1983, in Shawan County Agricultural Science Experimental Station, the omethoate, the enemy killed (deltamethrin) and other agents field efficacy test, demonstration. The test results are as follows: (1) with 40% omethoate, 50 ml dose of mu; or 50% methamidophos EC, mu dose of 40 ml (active ingredients are 20 g / acre) Aphids, has a good control effect, the effect of up to 7 days. (2) Kill 2.5% of the ECs with the dosage of 20, 30 and 40 ml respectively (calculated as 0.5, 0.75 and 1.0 g according to the active ingredients), check the 24-48 hours after application, The effect is up to 95%. But the amount of 20 ml mu, the short effect period, the first 7 days after application inspection, the rate of decline and prevention and control of pests only 75.5% and 72.87%. The mu dose of 30% ml and 40 ml, spraying the first 7 days after the population decline rate and control effect is still up to 96%.