In view of the diazo phosphate fertilizer light potassium fertilizer, NPK ratio, the irrational application period of phosphorus and potassium fertilizer, the insufficient application of organic fertilizer, and the insufficient attention paid to the application of trace elements, the following fertilization principles are proposed: (1) According to the soil fertility conditions and target yield, optimize the amount of NPK fertilizer, pay special attention to moderately reduce the amount of nitrogen and phosphorus fertilizer, and increase the application of potassium fertilizer; (2) The content of trace elements such as manganese, zinc, boron and molybdenum in the northern calcareous soil is low, and the supplement of trace elements should be paid attention to; when the acidification of vegetables in the south is serious, the acid soil conditioner such as lime should be applied in an appropriate amount; (3) Rational application of organic fertilizers to increase radish yield and improve quality, avoid the use of organic fertilizers that are not fully decomposed, and promote the application of commercial organic fertilizers and decomposed farmyard manure. 2. Fertilization advice (1) The amount of organic fertilizer applied, small radish (such as four season radish) with a production level of 1000-1500 kg/mu can be applied 0.5~1 square/mu of organic fertilizer; high-yield varieties with a production level of 4500-5000 kg/mu Fertilizer 3 ~ 4 square / mu or commercial organic fertilizer 100 ~ 150 kg / acre; (2) The production level is above 4000 kg/mu, the nitrogen fertilizer (N) is 10-12 kg/mu, the phosphate fertilizer (P2O5) is 4-6 kg/mu, and the potassium fertilizer (K2O) is 10-13 kg/mu; (3) The production level is 2500-4000 kg/mu, the nitrogen fertilizer (N) is 6-10 kg/mu, the phosphate fertilizer (P2O5) is 3-5 kg/mu, and the potassium fertilizer (K2O) is 8-10 kg/mu; (4) The production level is 1000-2500 kg/mu, nitrogen fertilizer (N) 4-6 kg/mu, phosphate fertilizer (P2O5) 2~4 kg/mu, and potassium fertilizer (K2O) 5-8 kg/mu. For plots that are prone to trace element boron deficiency, or those that have been shown to have boron deficiency symptoms in previous years, 1 kg of borax per acre may be applied before sowing, or 0.1% to 0.5% of borax may be used in the middle and late stages of radish growth. The boric acid aqueous solution is sprayed on the foliar surface, and sprayed once every 5 to 6 days, and sprayed 2 to 3 times. The base fertilizer applied all organic fertilizer and phosphate fertilizer, and 40% of the total amount of nitrogen fertilizer and potassium fertilizer; 60% of the total nitrogen fertilizer applied in the top dressing was applied twice in the rosette period and the fleshy root growth period. 60% of the total potassium fertilizer was mainly in the meat quality. Root growth and early expansion period. This article URL: 2017 autumn and winter Chinese cabbage cultivation and cultivation techniques and fertilization methods Product categories of Car Bumper Punching Machine, we are specialized manufacturers from China, Car Front Bumper Punching Machine, Car Rear Bumper Punching Machine suppliers/factory, wholesale high-quality machine of bumper punching R & D and manufacturing, we have the perfect after-sales service and technical support. Look forward to your cooperation! Car Bumper Punching Machine,Car Front Bumper Punching Machine,Car Rear Bumper Punching Machine Wuxi DIZO Ultrasonic Technology Company , https://www.dizosonic.com