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我省棉花铃期病害主要以铃疫病、炭疽病、红腐病和黑果病为常见。为筛选出有效药种防治棉花烂铃,在往年试验的基础上,1986～1987年选择敌唑酮、代森锰锌、高脂膜、甲霜灵等杀菌剂进行了多点多项试验。 方法与经过 试验田选择盛花期后一个月棉花长势旺盛、生长均衡、历年烂铃严重的田块,处理、对照各设3个重复,小区面积0.05亩,每次施药液4～5公斤,在棉株的中下部喷施。每次施药前调查各小区的铃病基数,10天后再调查、喷药一次,共2～3次,完成施药后10天,作最后的病情调查,并作品质、产量分析。
Cotton boll disease in our province mainly ring bell disease, anthracnose, red rot and black fruit disease as common. In order to select the effective medicine to prevent and control cotton bolls, on the basis of previous years’ experiments, a series of multi-point experiments were carried out on the insecticides such as tazobactam, mancozeb, high fat film and metalaxyl from 1986 to 1987. Methods After one month after full flowering, the cotton field grew vigorously with balanced growth and suffered serious rotten bells over the past three years. Each plot had 3 plots of plots of 0.05 mu in area and 4 to 5 kg of pesticides per application. The lower part of the cotton plant spray. Each application before the investigation of the district bell base count, 10 days after the investigation, spraying once, a total of 2 to 3 times, completed 10 days after application, for the final condition investigation, and for quality, yield analysis.