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当前,用除草剂防除水稻移栽田杂草已成为岳池县农民普遍采用的一项田间管理措施。但由于目前用于水稻本田防除杂草的除草剂种类多,施用方法多样,有的在栽秧前施,有的在栽秧后施,有的撒施,有的喷雾。农民在掌握这些技术时熟练程度又不一致,存在乱用滥用农药的现象,从而导致部分秧苗生长缓慢,甚至发生药害,影响水稻生长,造成减产。为了筛选适合岳池县水稻移栽前除草剂的安全、有效药剂,2014年5—6月,我们选用了20%异丙甲·苄可湿性粉剂等3种除草剂对不同时间栽插水稻进行了药效试验。
At present, using herbicides to control weeds in transplanting paddy fields has become a commonly used field management measure by farmers in Yuechi County. However, due to the variety of herbicides currently used for the control of weeds in rice Honda, the application methods are varied, some are applied before planting, some are applied after planting, others are applied, and some are sprayed. Peasants have different degrees of proficiency in mastering these technologies, and there is abuse of pesticides indiscriminately. As a result, part of the seedlings grow slowly and even cause phytotoxicity, affecting rice growth and yield reduction. In order to select a safe and effective medicament suitable for the pre-transplanting rice in Yuechi County, from May to June 2014, we selected three kinds of herbicides such as 20% Efficacy test.