How to apply bio-organic fertilizer to grapes
There are more nitrogen fertilizers in the early stage of the grape, and more phosphorus and potassium fertilizers are needed in the later stage. Grapes should be fully fermented with organic fertilizers. Chemical fertilizers should be added to organic fertilizers (sodium nitrate, urea, potassium nitrate, superphosphate, etc.). Base fertilizer: After harvesting the fruit until the new shoots are fully mature, at the end of September and early October get on. The base fertilizer is mainly bio-organic fertilizer, and the application of bio-organic fertilizer is 350-450 kg per mu, and 50 kg of super-calcium phosphate is mixed. It is applied along the vine row on one side, and top dressing: generally applied 10 days before flowering, strain Apply bio-organic fertilizer 3 to 5 kg, with 100 g of urea, ditch or acupoint application. The second top dressing in early July, the plant applied bio-organic fertilizer 2 ~ 3 kg, with the application of potassium sulfate 100 grams.
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