1, cotton encounters. Cotton locust plagues usually occur from June to July, affecting both the area of ​​insurance coverage and the resulting stagnation of cotton. Corresponding technologies are: (1) Robbing effluents and keeping old seedlings. As long as the growth point does not die, the cotton will be able to resume its growth after being drained. Old seedlings should not be easily plowed. The sooner the drainage, the more active the disaster relief. (2) Heavy rain injury seedlings, big fertilizers nourish. The loss of fertilizer in the cotton fields in the backwaters was much more likely. One had to catch up with the quick-acting fertilizers in rain and the second increased the number and quantity of fertilizers, and 667 square meters increased the application of urea by 15 to 20 kg. After a lot of peaches, the amount of topdressing should be increased. (3) loose soil training, ventilation and loose wet. After the rain, the cotton field is severely knotted. After grabbing topdressing, it is necessary to cultivate the soil as soon as possible. One can enhance the permeability, the second can promote new roots, and the third can prevent the cotton plants from lodging. 2, cotton drought. Drought inhibits fertility in cotton, causing premature aging and reducing yields. Corresponding technologies are: (1) Fertilization with water, trickle irrigation. (2) Spray fertilizer to adjust temperature and reduce shedding. Every 667 square meters of cotton special fertilizer 100 grams plus urea 400 grams, spray 30-40 kg of clean water. One can ease the drought and lower the temperature; the second can supplement nutrients and maintain normal growth; and the third can reduce the 5-10% drop of the bell. Spray fertilizer 2-3 times according to drought conditions.