1. Base fertilizer: direct root application, flush application, etc., can resist drought, cold, pests and diseases, and promote plant growth. Provide potassium and a large amount of organic matter to plants, and play a role in improving soil. The dosage per mu is 10-20 kg.

2. Foliar spraying: As a foliar spraying fertilizer, the dosage is 30-50 grams per mu and 15-30 kilograms of water, and it is made into an aqueous solution of 1: 500 to 1: 1000 times. - Generally, fertilize 4-5 times in combination with crop seedling stage, growing stage, flowering stage and fruiting stage.

3.The dosage of drip irrigation and flushing is 5-10kg per mu, evenly dissolved into the fertilization tank or directly flushed with water. Generally, fertilization is applied 4-5 times in combination in the seedling stage, growth stage, flowering stage and fruiting stage of the crop.

4. Soaking seeds and dipping roots: directly add water and stir to make a solution with a concentration of 1:2000 (1 part of potassium humate, 2000 parts of water), soak for 10-24 hours, and the soaking time can be appropriately shortened when the temperature is high.