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一、由于错用农药或高浓度使用辛硫磷、甲基对硫磷(1605)等引起棉叶变形、苞叶扭曲不伸展,似鸡爪型。应喷洒石油助剂,每亩用量40公斤左右,7天喷1次,连喷2～3次。 二、由于没有科学混配农药或喷量过大,引起叶片脱水、发红,叶绿干枯、上卷。应及时亩施尿素5～7公斤,浇1次水,促其快长新叶。 三、由于化控用缩节胺浓度过高,使棉株萎缩不长,叶变厚、果枝短、叶色深。应及时亩追尿素10公斤左右,浇1次水,并搞好整枝,增强通风透光作用性能。
First, due to misuse of pesticides or high concentrations of phoxim, methyl parathion (1605) caused by deformation of cotton leaves, husk leaves do not stretch, like chicken-type. Should be sprayed petroleum additives, the amount of 40 kilograms per mu, 7 days spray 1, and even spray 2 to 3 times. Second, because there is no scientific mixed pesticide or spray volume is too large, causing leaves dehydration, redness, leaf green dry, the volume. Mu Shu urea should be promptly 5 to 7 kg, poured 1 times the water, to promote its new long leaves. Third, due to chemical control with shrinking Amine concentration is too high, so that the cotton plant shrinking is not long, thickening of the leaves, fruiting branches short, dark leaves. Should promptly recover about 10 kilograms of urea, pour 1 water, and do a good job of pruning, enhance the role of ventilation and transparency.