MySheen

What medicine does cotton red leaf use?

Published: 2024-11-08 Author: mysheen
Last Updated: 2024/11/08, Control the top and promote the bottom to enhance the stress resistance of cotton plants. First, apply plant growth retardant mepiquat amine or auxin to control the vigorous growth of cotton, spray 2~ 3g mepiquat amine or 8~ 12ml auxin on 50kg water per mu; Second, for cotton fields with hardened soil, timely tillage and ventilation to enhance permeability; Third, for cotton fields with low terrain, pay attention to tilling ditches at any time to promote cotton roots to tie down; Fourth, the implementation of plastic film mulching cultivation of cotton fields, to immediately remove the plastic film, so that cotton roots to develop in depth. Increasing potassium fertilizer application and improving fertilizer efficiency for soil

Control up and down, enhance the stress resistance of cotton plants: one is to apply plant growth retardant acetaminophen or Zhuangzhuangsu to control cotton growth, spraying 50 kg of water with 2: 3 grams of meth or 8: 12 milliliters per mu; second, timely ploughing and ventilation in soil-hardened cotton fields to enhance permeability; third, for low-lying cotton fields, pay attention to dredging grooves at any time to promote cotton roots. Fourth, for the cotton fields cultivated with plastic film mulching, the plastic film should be removed immediately to make the cotton root develop in depth.

To increase the application of potassium fertilizer and improve the efficiency of fertilization, for the two kinds of cotton fields with potential potassium deficiency or less potassium application, the amount of potassium fertilizer should be increased by 10 kg / mu. First, it can meet the needs of potash fertilizer for cotton; second, it can adjust the proportion structure of fertilizer in cotton field and improve the utilization rate of nitrogen and phosphorus fertilizer.

Spraying fertilizer outside the root to improve the environment of oxygen supply and fertilizer absorption of the root system has caused red leaf stem blight, as long as the cotton leaves have not withered, the growth point of the main stem is still active, and extra-root topdressing can be used to quickly restore the growth function. One is to use 100 ml of humic acid active liquid fertilizer Nongshibao per mu and spray 45 kg of water; the other is to choose 0.2% potassium dihydrogen phosphate solution mixed with fungicides such as Maoling, which is used to control spot disease.

 
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