Question: This year's continuous high temperature and drought has a great impact on cotton production. Fortunately, the 5 mu of cotton planted in their own homes is pumped by wells. This has eased the situation and has performed well in the early stages. The single plant has already formed 30 to 40 peaches. However, because the plants transpire quickly, the fertilizer that is applied is water-free and cotton is difficult to absorb. If you can't catch fertilizer in the rain recently?
After consulting the industry experts, the reporter replied as follows: If it rains recently, it can be top-dressed. As Mr. Wang said, this year's continuous high temperature and drought, some cotton did not put up high-yield shelves, and the bolls fell off particularly severely. Generally, the shedding rate was over 30%, and the height was over 40%. Some flowers had been opened to the top. The end result was a lack of stamina, which caused a large loss to cotton production this year. It is estimated that the amount of seeded cotton will be about 200 kg per acre, and if it is strengthened after rain, it is expected to reach 300 kg per acre of seed cotton.
In normal years, peach fertilizer is generally applied from late July to early August. However, in the years of drought or disaster relief, flexible contingency measures should be taken to reduce the damage. In this year's continuous drought environment, for a portion of the cotton fields with insufficient reserves, there are still some young bells, flowers and buds in the cotton fields. Based on the following points: First, the effective flowering period of cotton is generally before September 8, if the temperature is high in the later period, it can be appropriately extended. The existing part of the larger buds can be fully bloomed before; the second is the late autumn peach. The effective looping period can be extended to about 60 days; the third is to grab the topdressing urea supplement nutrient cotton bolls, 7.5 to 10 kg per mu. Fertilizer need not worry about the growth of cotton at this time, because the direction of cotton nutrient transportation has been changed from the main stem to the cotton boll to the fruit branch. Only pay attention to three points in the fertilization operation technology: First, to grab the fertilization when grabbed; Second, it is necessary to apply fertilizer after rain, avoid rain before fertilization, to prevent urea concentrated decomposition burn cotton seedlings; Shi. In addition to this, it is also possible to combine insect repellents in the later stages, spraying 1% urea, 1% to 2% potassium sulfate, and 0.2% to 0.3% potassium dihydrogen phosphate solutions outside the roots.
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