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棉花要继续注意棉红蜘蛛的防治,7月下旬、8月中旬是棉红蜘蛛的两次高峰期,尤其以8月中旬繁殖最快,形成一个主要危害期。可用25％喹硫磷乳油每亩60克药,兑水40—50公斤喷治,或用三氯螨醇800—1000倍防治。棉蚜在此时,一般处于低潮阶段,但遇多雨降温时,仍能造成猖獗为害,要注意观察“伏蚜”的发生趋势,一旦严重,仍需用速灭杀丁每亩15—25毫升喷治。
Cotton should continue to pay attention to the control of cotton spider mites, in late July, mid-August is the peak of two spider mites, especially in mid-August breeding fastest, forming a major hazard. Available 25% Quetiapin 60 grams per mu medicine, watered 40-50 kg spray, or use of trichlorfon 800-1000 times control. Cotton aphid at this time, generally in the low tide stage, but in case of rain cooling, can still cause rampant damage, pay attention to observe the “Aphid” trend, once serious, still need to kill 15-25 ml Rush governance.