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近年来,应用75％3911乳油为种于重量的0.6—0.8％拌闷棉种,对棉蚜持续药效期已缩短到20—30天,难以控制蚜害。加大药量,棉苗易发生药害。为此我们于1983年在韩城、杨陵两地分别对5％涕灭威、3％呋哺丹颗粒剂的不同用药量和4％3911磷肥颗粒剂进行拌种防冶棉苗期棉蚜、棉叶螨、棉蓟马的试验。现将结果初报如下。一、试验材料供试药剂及用量:5％涕灭威颗粒剂(粒度10—40目),由天津农药工业研究所提供。设每亩施有效药量 25、50、75、100克4种处理。3％呋喃丹颗粒剂(粒度20—40目)由美国FMC公司生产,江苏铜山农药厂加工。设每亩施有效药量30、60克。4％3911磷肥颗粒剂(粒度10—40目),由天津农药厂生产的
In recent years, the application of 75% 3911 EC is planted in the 0.6-0.8% by weight of mixed cotton stuff, the duration of the efficacy of cotton aphid has been reduced to 20-30 days, it is difficult to control aphid damage. Increase the dose, cotton seedlings prone to injury. To this end, we in 1983 in Hancheng, Yangling, respectively, on the 5% aldicarb, 3% furosemide granules of different doses and 4% 3911 phosphate fertilizer seedling cotton seedling stage cotton aphid, Cotton spider mites, cotton thrips test. Now the results reported below. First, the test materials for test agents and dosage: 5% aldicarb Granules (10-40 mesh size), provided by the Tianjin Institute of Pesticide Industry. Set an effective dose of 25,50,75,100 grams per acre 4 kinds of treatment. 3% carbofuran granules (20-40 mesh size) by the United States FMC company, Jiangsu Tongshan Pesticide Factory processing. Set an effective dose per acre 30,60 grams. 4% 3911 phosphate fertilizer granules (10-40 mesh size), produced by Tianjin Pesticide Factory