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1,试验示范概况与效果。药液点心是针对苗期棉蚜多聚集棉株顶心危害的特点,将药液点于顶心上,具有施用少量药剂控制蚜害的效应。此法是我所1982年在作涂茎防
1, test demonstration overview and effect. Liquid medicine snack is aimed at seeding cotton aphid more than the top center of the cotton heart damage characteristics, the liquid point in the top center, with a small amount of pesticides to control the effect of aphid damage. This method is made in 1982 I painted stem defense