Strengthen cotton field management after rain and drought

The drought in the previous period caused the growth of cotton seedlings to be hindered and the birth process delayed. Recently, the southern cotton region has ushered in rainfall, and the fertilizer and water conditions in the cotton fields have greatly improved. The currently well-managed cotton fields have entered the bud stage and should be strengthened due to the seedling system. In particular, the prevention of fertilizer and water reversal affects the normal growth and development of cotton plants. The combination of promotion and control from late June to early July is the period when the main stem of cotton grows fastest. At this time, partial application of nitrogen fertilizer can cause plants to grow in size in the event of abundant rainfall, resulting in premature closure of the cotton field, serious damage to the lure, and a bell A large number of shedding, should pay attention to promote control and integration. For fields that have not yet entered the bud stage, the use of fertilizers is the main method to promote the growth of cotton seedlings. For the plots that entered the bud and flowering stages, high-content compound fertilizers and slow-release fertilizers were mainly applied. Potash fertilizers were applied to promote the early planting of high-yield cotton plants, so that they could be sealed in late July. The application of mepyl chloride to the plots of the cotton plant's long crops was preceded by 1 gram of pure drug per acre and gradually increased to 3 grams. In order to prevent the cotton plants from suffering waterlogging after drought, it is necessary to unravel the gully system and thoroughly clean the gutters, gutters, gutters and drainage gullies around the cotton fields so that the stains can be discharged and the drought can be filled. At the same time, after the rain, it is necessary to break the soil compaction, raise the soil, and prevent lodging. Prevention and control of pests Since the beginning of June, more rainy days, temperatures of 25 to 30°C, some old cotton fields began to wilt, and blind insects, cotton bollworms, red spiders, aphids and other pests also occurred. For the cotton field with wilt disease, decomposed organic fertilizer, bio-organic compound fertilizer and potash fertilizer should be added to enhance the disease resistance of the plant, and appropriate spraying control. In terms of insect pests, it mainly focuses on the prevention and control of blind plagues and also treats other pests.

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