1. The main organic fertilizer, full base fertilizer. During site preparation, the Mushi 2000-3000 kg farmyard fertilizer can fully balance the cotton nutrition, improve the ability of the roots to absorb the fertilizer, activate the soil, prevent compaction, and maintain the ecological balance in the rhizosphere.
2. Reduce the application of diammonium phosphate. Nitrogen, phosphorus, and potassium ternary compound fertilizers should be used, or local formula fertilizers for cotton should be used. It is also possible to use three 15 kg of compound fertilizers of nitrogen, phosphorus and potassium as the base fertilizer. Adding 2 kg of Luhong No. 1 powder to other compound fertilizers can improve the resistance of cotton to blight, verticillium wilt, and blight, and effectively solve the problem of dead seedlings.
3. Use 100 kg of cake fertilizer and 40-50 kg of biological fertilizer as base fertilizer per acre. When the base fertilizer is used, organic manure such as cake fertilizer, fungus fertilizer and two-thirds of the compound fertilizer are turned into the ground, and one-third of the compound fertilizer is applied to the surface along with the time of hoeing, which is favorable for the utilization of nutrients at the seedling stage of cotton.
4. Stable bud fertilizer. The bud fertilizer can be applied with a small amount of compound fertilizer, generally 8 to 10 kilograms per mu, to achieve stable growth.
5. Reapply flowers and bells. More than 80% of the nutrients needed for cotton are in the boll stage, so heavy fertilization is required. Apply 20 kg of urea per acre to water to meet the nutrient requirements of cotton.
Needs.
6. Apply cover top fertilizer. Cotton tops in autumn peach
Before the phenomenon of premature aging was found, it was necessary to apply 8 to 10 kg of urea to apply water to prevent premature aging.
7. Clever foliar fertilizer. In order to meet the needs of cotton for medium and trace elements, especially for boron, zinc and other elements, to reduce the deficiency of the disease, we should choose to apply foliar fertilizer after the growth of cotton, can use Lu Hong Hui Hui dew fertilizer. After budding period, the special foliar fertilizer used by Luhong Jinkelao was sprayed once every 7 days, and even sprayed 3 to 4 times, which can increase the weight of the boll, promote growth, reduce the phenomenon of falling bells, and significantly increase production.
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