大乐透走势图

山东麒麟农化有限公司 :杀虫剂,除草剂,农药杀菌剂,拌种剂(种衣剂),作物营养,欢迎来电咨询!
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了解一下产品使用要求

来源:http://yuiuow.cn/news/366.html   发布时间:2019-10-14

在农业中,我们都知道农业药剂的种类有很多种,除草剂便是农业中比较常用的药剂之一。那么在使用除草剂过程中,对于操作要求也是非常严格的。今天就由小编带您一起来了解一下除草剂使用要求分别都有哪些吧?

除草剂使用要求

除草剂

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除草剂的选择性是在一定用药量范围内的选择性,故即使是有选择性的除草剂,超出了规定的用量范围对作物也会产生药害。如60%丁草胺乳油在水稻秧田用量超过0.15升/亩,棉花苗床48%氟乐灵用量超过为0.1升/亩,10%恶草灵在水稻秧田用量超过0.3升/亩,在水稻移栽后10天内50%威罗生用量超过0.3升/亩等都会造成农作物药害。2,4-D丁酯对小麦具有一定选择性,但用量过大时,则同样会杀死小麦或使小麦植株严重畸形,影响产量。此外,除草剂的用量是否适当还受到作物种类、土壤质地、气候条件和施药方法等因素的影响。如高浓度使用除草剂时,切不可重喷,否则易造成局部施药浓度过大,而发生局部药害。

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