Northwest Cotton Region Fertilization principle (1) According to the soil fertility condition and fertilizer efficiency response, properly adjust the amount of nitrogen fertilizer, increase the proportion of mid-fertility application, and rationally apply phosphorus and potassium fertilizer. (2) Make full use of organic fertilizer resources, increase the application of organic fertilizers, and pay attention to the return of cotton stalks to the fields. (3) Combining fertilization with high-yield and high-quality cultivation techniques, especially the integrated regulation of water and fertilizer. 2. Fertilization advice (1) Under-film drip irrigation cotton field: under the condition of 120-150 kg lint cotton, the cotton seed cake is 50~75 kg, nitrogen fertilizer (N) 20~22 kg, phosphate fertilizer (P2O5) 8~10 kg, potash fertilizer. (K2O) 5~6 kg; lint yielding 150-180 kg per mu, applying cotton seed cake 75~100 kg, nitrogen fertilizer (N) 22~24 kg, phosphate fertilizer (P2O5) 10~12 kg, potassium fertilizer ( K2O) 6~8 kg. For cotton fields lacking boron and zinc, the water-soluble boron fertilizer is 1.0~2.0 kg/mu, and the zinc sulfate is 1.5~2.0 kg/mu. Boron fertilizer is suitable for foliar application, and zinc fertilizer can be applied as base fertilizer. The nitrogen fertilizer base fertilizer accounts for about 25% of the total, and the topdressing accounts for about 75% (the bud period is 15%, the flowering period is 20%, the flowering and boll period is 30%, the cotton boll is 10%), and the phosphate and potassium fertilizers account for about 50%. top dressing. The number of top dressings in the whole growth period was about 8 times. In the early stage, there was less nitrogen and phosphorus, and in the middle and later stages, there was less phosphorus and nitrogen. The irrigation and fertilization were carried out in combination with the drip irrigation system. Advocate the use of fully water-soluble fertilizer for topdressing, the use of monoammonium phosphate for topdressing needs to match 1.5 times more urea top dressing. (2) Conventional irrigation (flooding or furrow irrigation) cotton field: the yield of lint cotton is 90-110 kg, 50 kg of cottonseed cake or 1~1.5 tons of high-quality organic fertilizer, and nitrogen fertilizer (N) 18~20 kg, phosphate fertilizer ( P2O5) about 7~8 kg, potash fertilizer (K2O) 2~3 kg; lint yielding 110-130 kg per mu, applying cotton seed cake 75~100 kg or high-quality organic fertilizer 1.5~2.0 tons, nitrogen fertilizer (N)20 ~23 kg, phosphate fertilizer (P2O5) 8~10 kg, potash fertilizer (K2O) 3~6 kg. For cotton fields lacking boron and zinc, pay attention to the application of boron and zinc fertilizer. 45%~50% of the nitrogen fertilizer in the ground paddy field is used as the base application, and 50%~55% is used as the top dressing. 30% of the nitrogen fertilizer is used in the initial flowering period, and 20% to 25% of the nitrogen fertilizer is used in the flowering period. 50%~60% of phosphorus and potassium fertilizer is used as base, and 40%~50% is used as top dressing. This article URL: Guilin Opinions on Cotton Science Fertilization Technology in Northwestern Cotton Region in Spring 2015 Veterinary drugs can be roughly classified into four categories: â‘ general disease control drugs; â‘¡ infectious disease control drugs; â‘¢ internal and external parasitic disease control drugs; â‘£ (including growth-promoting drugs). Except for Biochemical immune products (bacteria, vaccines, serums, antitoxins and toxoids, etc.) for the prevention and treatment of infectious diseases, and special veterinary drugs such as special parasitic drugs for livestock and poultry and growth-promoting drugs, the rest are the same as those for human use, but the dosage , dosage forms and specifications are different. It has long been widely used to control livestock and poultry diseases. Veterinary Raw list,Tulathromycin A Powder Prcie,Bulk Ethopabate Powder Price,Norfloxacin Powder Price,Isoprenaline Hydrochloride Powder Xi'an Henrikang Biotech Co.,Ltd , https://www.xianhenrikang.com
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