Make full use of light and heat to regulate cotton growth

At present, cotton has entered the flowering period. The cotton of Linfuqing in Bailian Village, Danggang Town, Xiaonan District, Xiaogan City, Hubei Province has 6~7 layers of fruit branches. Their cotton has a long trend, while some farmers still have cotton. Not showing buds, and the time difference between early-born cotton is 25~30 days.

Why is there such a big gap in the cotton birth process?

In terms of the early development of cotton, the first is that the cotton front is mostly spring flower land, and no other crops are planted. Second, the cotton nutrition seedlings are planted earlier, the management is better, the seedlings are transplanted, and the third is the cultivation with plastic film. The fourth is to provide fertilizer in time and the drainage conditions are better.

From the analysis of the reasons for late cotton, the first is that the front stalks are mostly full of wheat or rapeseed. After harvesting, the cotton can be transplanted and the seedling period is longer. Second, the cotton field is not applied with fertilizer, and the cotton seedlings are malnourished. The cotton roots are damaged; the fourth is the rainy and rainy, the lower the ground, the higher the groundwater level, the cotton field is affected by the seeds; the fifth is the misuse of the herbicide, which kills the weeds and damages the cotton seedlings.

    If the early-developed cotton can't keep up, it is easy to cause premature aging. If the cotton is delayed, it is difficult to balance the increase of cotton. Both late and premature aging are obstacles to cotton yield increase. Such typical cases are quite numerous over the years. If neglected in production, artificial production will be reduced. Therefore, in the current cotton production management, we must focus on The following two measures are good.

First, correctly analyze the situation of the seedlings and establish confidence in capturing high yields of cotton. From the current category of seedlings, cotton seedlings that have already flowered account for more than 10% , and late cotton seedlings account for about 20% to 30% , and most of the cotton seedlings enter the bud stage. Cotton has strong plasticity and strong compensatory ability. The time for increasing bud, increasing flowers and increasing bells is still very long. There is a large space for maneuvering and many opportunities for transformation. In the face of the problem of delayed and premature aging of cotton, as long as the ecological conditions are improved, fertility transformation Speed ​​is completely controllable, and it is hopeful to capture balance and increase production.

Second, scientifically manage fertilizer and water to promote balanced growth. From June to September , the light and heat resources are sufficient. In the management of cotton fields, it is necessary to make full use of the light and heat energy, scientifically use the fertilizer water, improve the photosynthetic efficiency, and promote the growth of cotton. First, it is necessary to classify and topdress the seedlings. For the cotton that has already blossomed, apply more than 15 kg of multi-component fertilizer per acre . For cotton seedlings that are mostly in the bud stage, it is necessary to apply the home fertilizer stably, apply 1500 kg of organic fertilizer produced by the decomposed farmer or 50 kg of bio-organic compound fertilizer per mu, apply 15 kg of potassium fertilizer , and spray quick-acting boron outside the root. Fertilize three times to prevent flowers from being unrealistic; second, we must do a good job in deep-cultivation, high-cultivation, conservation, root protection, lodging prevention, and convenient drainage; third attention should be paid from late June to early July , which is the peak of cotton nutrition and reproductive growth. Period, to prevent the peak of the release of fertilizer and water, use the delayed plant growth regulator ketamine or auxin, regulate the stable plant shape, use 2 to 3 grams of ketamine per acre or 8 to 12 milliliters of auxin , sprayed with 30 kg of water . For late-onset cotton seedlings, in addition to appropriate topdressing of nitrogen fertilizers, it is necessary to apply accelerated plant growth regulator " 802 " or Tianfengsu, Baoyu, etc. to accelerate growth.

 

 

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