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西维因是江苏省如东县农药厂生产的一种有机氮杀虫剂。目前生产的剂型有25%、50%、85%的可湿性粉剂;还生产低浓度的3%西维因粉剂。二年来,我们对稻飞虱进行了大面积的防效试验,均取得了较好的防治效果。现将今年的试验情况初报如下。一、试验方法试验田设在桐本乡农科队,水稻品种为盐粳2号。试验所用剂型为50%西维因可湿性粉剂,所设处理: 50%西维因可湿性粉剂每亩有效成分50、100、150、200克和空白对照五个处理。
West Vitamin is an organic nitrogen pesticide produced by Rudong County pesticide factory in Jiangsu Province. Currently available dosage forms are 25%, 50%, 85% wettable powders; low concentrations of 3% Cimetidine are also produced. In the past two years, we conducted a large-scale prevention and control test on planthoppers and achieved better prevention and control effects. Now this year’s test report is as follows. First, the test method Experimental field located in Tong village of agricultural team, the rice varieties salt japonica on the 2nd. The test dosage form used for the 50% of the Westwestern WP, set up treatment: 50% of the active ingredients of CIVW WP 50,100,150,200 grams and the blank control of five treatment.