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What fertilizer can be applied to prevent the premature senescence of cotton?

Published: 2024-11-06 Author: mysheen
Last Updated: 2024/11/06, What fertilizer can be applied to prevent the premature senescence of cotton? Please introduce the causes of premature senescence of cotton: 1. Transgenic hybrid insect-resistant cotton needs more potash fertilizer than conventional hybrid cotton, and the rate of absorption and transformation of potash fertilizer is slower, if the amount of potassium application is insufficient, it is easy to show symptoms of potassium deficiency. Now there are many old cotton fields and few new cotton fields.

What fertilizer can be applied to prevent the premature senescence of cotton? Please introduce the causes of premature senescence of cotton: 1. Transgenic hybrid insect-resistant cotton needs more potash fertilizer than conventional hybrid cotton, and the rate of absorption and transformation of potash fertilizer is slower, if the amount of potassium application is insufficient, it is easy to show symptoms of potassium deficiency. At present, there are many old cotton fields and few new cotton fields, the content of organic matter in cotton soil is decreasing, and the content of potassium is not high. Many farmers are accustomed to applying nitrogen fertilizer rather than potash fertilizer, but too much nitrogen fertilizer will lead to excessive vegetative growth of cotton and more likely to cause premature senescence. Mistakenly think that compound fertilizer contains potash fertilizer, do not need to apply potash fertilizer; 5. Lack of understanding of the relationship between potash fertilizer and cotton growth. Second, prevention and control measures. In the middle and later stage of cotton management, it must be emphasized that potash fertilizer should be well applied. 1. To ensure that the amount of potassium applied per mu is not less than 60 jin, such as the application of potassium chloride with a potassium oxide content of 60%, not less than 60 jin per mu, if a compound fertilizer has been applied, the amount of potassium application can be reduced because the compound fertilizer contains potassium. 2. During the fertilization period, it is better to apply half of the base fertilizer and topdressing fertilizer, 40 jin of potassium per mu in the bud stage and 20 jin in the flower and boll stage if there is no potassium fertilizer in the base fertilizer. In the application method, it should be mixed with nitrogen and phosphorus fertilizer, ditch application in bud stage combined with middle ploughing and soil cultivation, and deep application in flower and boll stage to avoid spreading and prevent loss after rain. Click to get more nitrogen, phosphorus, potassium application technology click to get more chemical fertilizer application technology click to get more cotton planting technology

 
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