This is mainly due to the inhalation of oral pests such as flower mites in the later stage, the wound on the boll shell on the surface of cotton peach, and the lignified structure of the wound, which is our common tiger pattern spot. The clock is long inside, and there is no unnatural crack caused by tiger stripes (similar to the scab of human wounds) outside. Peaches usually come out at the top, so we often have sunny days. At the same time, this problem will also occur when the fertilizer ratio is appropriate in the later stage. The difference is whether the wound on the surface of Bell's shell will appear. The occurrence time is generally around August 10. The reference position is usually at the top. The road plot is more serious. Strengthening horse control and water and fertilizer management in early August can effectively prevent this problem.

It's too late to release it now. It is suggested that the shooter must guard against it in advance next year. This loyalty can last all winter. The main reason is the sudden drop of temperature and insufficient nutrition, which leads to premature aging. Finally, water should be properly supplemented with fertilizer to delay premature aging. High density, poor ventilation, mutual shielding and insufficient light. Improper machine operation will affect the root binding. Due to improper management of water, fertilizer and chemical control, apprentices appeared. For those who have fallen, there is no good treatment at present, and it is unrealistic to correct them manually with a tree. The accommodation area is large. In order to reduce the waste and loss caused by agricultural machinery application and harvesting in the later stage, we can try drone spraying or choose cotton machine to minimize the loss.

We carefully analyze these problems and find that there are signs in the early and middle stages, and timely measures can be taken to correct them in time. After the problem expands, there is basically no good relief method. Due to the high temperature and suitable climate, cotton peaches grow fast and are not short of water, especially the middle and upper cottonseed grow well. Low temperature and rainy weather are not conducive to the differentiation of presbyopia, and urban roads are high. Most cotton fields have extra branches more than 30 cm, and their legs are relatively high. The lower leaves turn into peaches and the legs are taller. Some cotton fields are light-footed, and cotton plants fall down. Tianshan agrees. This should be the main reason for the fall of cotton fields this year.

In mid-July, some cotton fields were seriously short of water and drought, resulting in a large area of water accumulation under the bridge. In addition, some cotton fields use less potassium fertilizer, and cotton stalks may faint due to insufficient fertilizer. Some cotton fields use too much potassium, but potassium imbalance is found in cotton fields. If the content of potassium fertilizer is high, most of it is difficult to dissolve, and most of it cannot be diluted twice in cotton field or pump room, which leads to uneven application of potassium in cotton field, and insufficient potassium in cotton field will lead to lodging of cotton plants. The investigation results show that some cotton fields have the phenomenon of premature senescence of maple leaves at low temperature. Recently, the rainfall in a small area has cooled down a lot, which seems to have some influence on cotton in cotton fields.