1. Combine pest control with fertilizer rhythm. It is not necessary to add fertilizer to every insect pest control. Different types of nutrients such as NPK and trace elements should be applied alternately. The same nutrient should be sprayed once every 7-10 days. Different nutrients should be separated by 3 to 5 days. For example, the first use of nitrogen fertilizer, the second use of phosphorus and potassium fertilizers, the third use of trace elements such as leaf fertilizer. 2, choose a good variety to ensure nutrient coordination. Urea is an ideal nitrogen fertilizer for foliar spraying. It is sprayed with 0.5% urea aqueous solution to the leaf surface during the later growth period of cotton. Phosphorus and potassium fertilizers are suitable for potassium dihydrogen phosphate with a concentration of 0.2%. Trace element fertilizer can effectively reduce the upper part. Leaf deficiency symptoms, increase the rate of ringing. In addition, the humic acid liquid fertilizer has the effect of promoting the development of the root system and the robustness of the plant, which can enhance photosynthesis, regulate plant physiology, promote plant growth and dry matter accumulation, thereby increasing yield and improving quality. 3, flexible regulation to increase photosynthetic efficiency. Foliar fertilization should be based on the growth and longevity of cotton. The cotton with weaker growth is generally dominated by nitrogen fertilizer, combined with the application of phosphorus and potassium fertilizers; the growth is generally combined with nitrogen, phosphorus and potassium; the phosphorus and potassium fertilizers are mainly used for the prosperous growth, combined with chemical control, plus methothenate per acre. ~3.5g water spray. Trace element fertilizers are suitable for all types of cotton fields, especially those with weaker growth fields should be used. Chemistry Analyser,Semi Auto Chemistry Analyzer,Semi Automated Chemistry Analyzer,Semi Automated Clinical Chemistry Analyzer ZSL MED , https://www.zslmed.com
Strengthen foliar fertilization and increase cotton boll rate
This summer, Haimen's summer crops have been delayed due to the impact of climate, and have been in a drought state since the summer harvest, until a few days of continuous heavy rain in mid-July. The weather conditions of this post-drought rain are very unfavorable to the postponement of transplanting cotton, and the birth process is delayed by about 10 days from the normal year. In order to increase the rate of formation of buds at the later stage of cotton and increase the rate of boll formation, it is recommended to strengthen the management of late fertilization by foliar spraying.