How to apply potassium sulfate compound fertilizer to vegetables?

How to apply potassium sulfate compound fertilizer to vegetables? Please introduce the following methods of applying potassium sulfate compound fertilizer to vegetables for reference: cucumber: general cucumber high-yield field base fertilizer 5000 kg per mu of high-quality organic fertilizer, 50 kg potassium sulfate compound fertilizer. The principle of topdressing is a small number of times, the total amount of topdressing is about 50 kg, topdressing should be applied with water, once a month, urea and potassium sulfate compound fertilizer should be used alternately, 10-15 kg per mu. Green onion: before planting, 5000 kg of organic fertilizer and 30-40 kg of potassium sulfate compound fertilizer were applied to each mu of soil preparation. The Beginning of Autumn applied 25-30 kg potassium sulfate compound fertilizer per mu, 20-30 kg potassium sulfate compound fertilizer after signing, 10-15 kg potassium sulfate compound fertilizer and 5 kg urea from White Dew to the Autumn Equinox. Onion: combined with ploughing and soil preparation, 2000-3000 kg of high-quality rotten farm fertilizer and 40-50 kg of potassium sulfate compound fertilizer are applied per mu. After the beginning of spring, the plant enters a period of vigorous growth, which can be topdressing for 1-2 times, and 15-20 kg potassium sulfate compound fertilizer is applied per mu. When the bulb increases to about 3 cm, it is necessary to apply fertilizer in time, applying 700-1000 kg of rotten manure or 10-15 kg of potassium sulfate compound fertilizer per mu. When the phosphorus stem continues to grow to 4-5 cm, apply chemical fertilizer once more and apply 15-20 kg potassium sulfate compound fertilizer per mu. Pepper: combined with soil preparation, 5000 kg of fully mature high-quality farm fertilizer and 40-50 kg of potassium sulfate compound fertilizer are applied per mu. After the first topdressing, 8-10 kg of urea was applied per mu after the plant survived. For the second time, 10-15 kg potassium sulfate compound fertilizer was applied per mu when the plant was budding. The third topdressing was applied when the fruit of the first ear began to expand, 10-15 kg potassium sulfate compound fertilizer per mu was applied in strips or holes, and then watered. The fourth time in the fruiting peak period, combined with watering, 10-15 kg potassium sulfate compound fertilizer per mu. Chinese cabbage (cabbage): when ploughing and ploughing, 2500-3000 kg of fully mature organic fertilizer and 25 kg of potassium sulfate compound fertilizer are applied per mu. Fertilization was carried out at seedling stage, rosette stage, early heading stage and middle heading stage. 25-30 kg potassium sulfate compound fertilizer was applied per mu, of which heavy fertilization was carried out at the early heading stage, and the amount of fertilizer application was 3 times higher than that in other periods. The cabbage can be applied in furrow before the ridge is sealed, and washed along the water after the ridge is sealed. Click to get more compound fertilizer application techniques