1. The principle of “a branch to an unequal hour and a time to a branch†is adhered to in order to adhere to the principle of “a branch to an unequal timeâ€. That is to say, the number of fruit branches reaching 13 to 14 or the arrival time of July 15 will be the top. Cotton management needs flexibility, so it is appropriate to postpone the time for the top of a cotton field that is particularly late or has some phytotoxicity and summer sowing.
2, control "strong seedlings, stable buds, control early flowers." The early flowering period is the critical period for using chemical measures to prevent cotton growth and control leggy. The farmers' friends must determine the amount of acreage to use in accordance with the weather and the growth of cotton. Generally speaking, on the basis of grasping the principles of seeing the heavens, seeing the land and seeing the seedlings, the amount of mu is 1.5 to 2.5 grams. When the seedlings are in good condition, the growth is strong, the bottom is full, and there is rainfall in the near future, the upper limit is selected; otherwise, the lower limit is used. In the same situation, the simplification of the pruning of the cotton field requires careful attention to reduce the use of shrinkage.
3, pest control Lumbricornia treatment of cotton bollworm, acetamiprid + beta-cypermethrin 1000 times; or fenvalerate + malathion 1000 times; or direct use of compound agents such as the West wind fierce Such as spraying, both prevention and treatment of green ticks and cotton bollworm. The spraying time during the day should be before 9 am and after 5 pm. In view of the characteristics of spotting of spider mites in cotton fields, attention should be paid to the timely inspection and treatment. The choice of avermectin and promethazine can be used for drugs.
4, top-dressing "strong seedlings, stable buds, control of early flowers, Shenghua urged to grasp the peach." In other words, the full flowering period needs to be topped up, considering that the urea should be absorbed by the urease after it is applied to the soil. Therefore, urea should be applied 4 to 8 days in advance. Farmers are advised to top-dress at the early flowering stage (also the farmer said to have a peach). In addition, pay attention to the weather forecast, top-dressing as far as possible not to choose before heavy rain in order to prevent damage and loss. Insect-resistant cotton is a high-potassium crop, base fertilizer is not applied with potassium fertilizer, and topdressing with nitrogen and potassium is preferable. The amount of fertilizer is about 15 kg per mu, about 15 kg of potassium chloride or potassium sulfate.
5. Watering in dry conditions should promptly water the dry cotton fields. After the heavy rains, the water in the fields should be promptly eliminated, and shallow cultivators should be used.
2, control "strong seedlings, stable buds, control early flowers." The early flowering period is the critical period for using chemical measures to prevent cotton growth and control leggy. The farmers' friends must determine the amount of acreage to use in accordance with the weather and the growth of cotton. Generally speaking, on the basis of grasping the principles of seeing the heavens, seeing the land and seeing the seedlings, the amount of mu is 1.5 to 2.5 grams. When the seedlings are in good condition, the growth is strong, the bottom is full, and there is rainfall in the near future, the upper limit is selected; otherwise, the lower limit is used. In the same situation, the simplification of the pruning of the cotton field requires careful attention to reduce the use of shrinkage.
3, pest control Lumbricornia treatment of cotton bollworm, acetamiprid + beta-cypermethrin 1000 times; or fenvalerate + malathion 1000 times; or direct use of compound agents such as the West wind fierce Such as spraying, both prevention and treatment of green ticks and cotton bollworm. The spraying time during the day should be before 9 am and after 5 pm. In view of the characteristics of spotting of spider mites in cotton fields, attention should be paid to the timely inspection and treatment. The choice of avermectin and promethazine can be used for drugs.
4, top-dressing "strong seedlings, stable buds, control of early flowers, Shenghua urged to grasp the peach." In other words, the full flowering period needs to be topped up, considering that the urea should be absorbed by the urease after it is applied to the soil. Therefore, urea should be applied 4 to 8 days in advance. Farmers are advised to top-dress at the early flowering stage (also the farmer said to have a peach). In addition, pay attention to the weather forecast, top-dressing as far as possible not to choose before heavy rain in order to prevent damage and loss. Insect-resistant cotton is a high-potassium crop, base fertilizer is not applied with potassium fertilizer, and topdressing with nitrogen and potassium is preferable. The amount of fertilizer is about 15 kg per mu, about 15 kg of potassium chloride or potassium sulfate.
5. Watering in dry conditions should promptly water the dry cotton fields. After the heavy rains, the water in the fields should be promptly eliminated, and shallow cultivators should be used.