Second, the fertilization of various vegetables

1 Melons: Apply sufficient basal fertilizer to ensure that the decomposed organic fertilizer is 4000-5000 kg/mu, diammonium phosphate 30-40 kg/mu, potassium sulfate 40-60 kg/mu or three-element compound fertilizer 100 kg/mu. Appropriate top-dressing, per acre can compost fertilizer manure 1000 kg or ternary compound fertilizer (or urea) 10 kg. At the same time can be 0.4% urea plus 0.3-0.4% phosphoric acid diphosphorus supplemented with foliar fertilizer 2-3 times. CO2 gas fertilizer can be added to the protected area. It is forbidden to use harmful municipal waste and sludge, and it is not allowed to use manure fertilizer as top dressing during the harvesting stage.

2 Solanaceous vegetables: organic fertilizers are used as main fertilizers, and base fertilizers are applied to ensure adequate application of organic fertilizers of 4000-5000 kg/mu, and use of diammonium phosphate 30-40 kg/mu and potassium sulfate 40-60 kg/. Mu or three-element compound fertilizer 100 kg/mu. Appropriate top-dressing, per acre can be followed by decomposed human excrement 1000 kg or urea 10 kg. Harmful municipal waste and sludge should not be used, and no manure should be used for top dressing during the harvesting stage.

3 leafy vegetables: Apply enough base fertilizer to ensure the application of mature organic fertilizer 4000-5000 kg/mu, diammonium phosphate 30-40 kg/mu, potassium sulfate 30-40 kg or three-element compound fertilizer 80 kg/mu. Appropriate top-dressing: The application of slow-acting fertilizers in the early and middle stages can be followed by adequately decomposed manure and urine 1000 kg/mu, vegetation ash 40-100 kg/mu, and three-element compound fertilizer (or urea) 10 kg/mu; Application of quick-acting ammonium bicarbonate 20-30 kg/mu or urea 10 kg/mu. Harmful municipal waste and sludge should not be used, and no manure should be used for top dressing during the harvesting stage.