First, pick the leaves to the branches. Removal of stems and vegetative shoots from the stem of the main stem reduces the supply of nutrients while improving the ventilation and light conditions in the field.
Second, control nitrogen fertilizer. Stop the application of nitrogenous fertilizer and increase the application of phosphorus and potassium fertilizer. Apply 20-30 kg of calcium phosphate and 5-7 kg of potassium chloride per mu.
Third, timely deep cultivator. In combination with herbicide cultivars, cultivators work to disrupt part of the root system's growth. When the madness is severe, the root system can be cut off with shovels to reduce the absorption of fertilizer and water and slow the growth rate.
Fourth, open the trenches. Deeply dig trenches, lower groundwater level, lower soil temperature, and control the water uptake of cotton seedlings.
Fifth, push the strains in parallel. After the dew is dry every day, push the cotton plant to one side manually, let the sun shine, and then push it in the opposite direction the next day. Repeat this for more than one week.
Six, pinch top control. For cotton plants that grow more severely, the cotton field where the main stem grows too fast can be manually pinched by hand (approximately 6 cm at the top) and the main stem is pinched and the nutrients are transported upwards to stop the growth at the top. Play as a controller.
Seven, chemical regulation. Spray inhibitors to control the growth of the main stem and fruit shoots of cotton plants. During the bud period, 1.5 grams of salicylamine was sprayed on 50 kg of water to regulate the growth and development of cotton plants.
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