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在作物生长期间,常遇到梅雨期连续阴雨的天气,影响施药防病冶虫。为了在雨季提高农药的防治效果,应注意如下方面: 选用内吸性农药 内吸性农药可通过作物的根、茎、叶等部位进入植株体内,并输送到其他部位,在一定时间内起毒杀作用,如呋喃丹、甲拌磷、久效磷、氧化乐果、磷胺等杀虫剂及异稻瘟净、多菌灵、粉锈宁、三环唑、托布津等杀菌剂就属于这种类型。这类农药在使用后4～5小时,便有80％以上的有效成分被作物吸收到组织内部,即使此时再下雨仍
During the crop growth, often encounter rainy days continuous rainy weather, affecting the application of disease prevention smelt. In order to improve the control effect of pesticides in the rainy season, attention should be paid to the following aspects: Selection of systemic pesticides Absorption of pesticides can enter plants through roots, stems, leaves and other parts of crops and transport them to other sites for poisoning within a certain period of time Kill effect, such as carbofuran, phorate, monocrotophos, omethoate, phosphate and other insecticides and different rice blast net, carbendazim, triadimefon, tricyclazole, Topaz and other fungicides belong to this Types of. More than 80% of the active ingredients of these pesticides are absorbed into the tissues by the crops 4 to 5 hours after use, even if it is raining again