Method for applying potassium fertilizer to Chinese cabbage

1. Basic application: Chinese cabbage produces more than 10,000 kilograms, 300-500 kilograms of refined organic fertilizer, 300 kilograms of dried chicken manure, 3 squares of grass manure, and then compound fertilizer (nitrogen, phosphorus and potassium content of 35%) Above), such as the use of Sacofu potassium sulfate compound fertilizer for 30-40 kg; the above two fertilizers can be applied alone. Nitrogen fertilizer (46% urea 15 kg), phosphate fertilizer (14% superphosphate 30 kg), potassium fertilizer (50% potassium sulfate 12 kg) can be compounded into compound fertilizer without using compound fertilizer. It is best to use a ditch to concentrate the application, use the soil ditch to ridge, and scatter the cabbage seeds on the ridge.
2. Topdressing: The amount of fertilizer required for cabbage during the ball-forming period accounts for more than 60% of the total fertilizer requirement during the whole growth period. In this period, in addition to applying nitrogen fertilizer twice (20-25 kg urea), another potassium sulfate 5- 7 kg, ditched in the ridge and covered with soil.
3. Foliar application: 0.2% potassium dihydrogen phosphate can be sprayed during the rose period to the balling stage, sprayed once every 7-10 days, sprayed 3 times, in the morning, evening or cloudy all day Can be sprayed.

Huaxian County Fertilizer Station Yue Xiuli

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