Cotton cotton pay attention

In recent years, with the widespread adoption of insect-resistant cotton, plastic film covering and chemical control technologies, cotton farmers have had some unfavorable cultivation tendencies in cotton cultivation technology, especially chemical control technology (hereinafter referred to as chemical control). Without paying attention to timely and appropriate quantitative control, the cotton field was long and prosperous, the nutrition growth was excessive, and buds, flowers, and bells fell off more severely. As a result, the cotton plants became high, large, and empty. .

In the process of chemical control, we should use the principles of “seeing the sky, seeing the land, and seeing the seedlings” with the goal of stabilizing high-yield shelves and boosting budding bolls, and use the plant regulators at appropriate and timely levels based on the daily growth of cotton stems. Controlling and mastering the methods of “a small number of times, light control, and light weight”. Take active control to ensure the stable growth of cotton plants that are strong but not prosperous. The frequency of chemical control should be based on the characteristics of the cotton varieties in combination with the growing conditions of the cotton plants at that time, and inferring the growth situation in the near future and grasping them flexibly. From the growing trend of cotton at that time, if control is possible, it is not controllable either. If it is not too dry, it must be controlled. If wait until control is not possible, it will be too late to control it. This is the difference between active control and passive control. The bud period is the key period for shaping the plant type. With less use of medicine and good results, it is necessary to start the first chemical control. If the seedling period is growing too prosperous, the first chemical control must be advanced.

Chemical control process should pay attention to the problem: 1, chemical regulators different from fertilizers and pesticides, can not replace fertilizers and pesticides. 2. Chemical regulators are not easy to use due to lack of water resources, poor soil fertility, and poorly growing premature senescence cotton fields. They will strengthen the management of fertilizers and water in cotton fields where chemical fertilizers are applied, and prevent drought or lack of fertilizers. 3. In the entire breeding process of cotton, the implementation of chemical transfer technology should grasp the principle of small, multiple, to prevent over-control or produce the key. 4, spraying growth regulators should be selected after 4 pm sunny. After 8 hours of spraying, heavy rain should be sprayed in case of moderate rain. 5. As the chemical control is mainly to control the growth point of cotton, for the cotton varieties with upturned fruit branches and medium length, the top cover spray is applied during this period, and the long and flattened varieties of fruits have proper control of fruit tree growth points.