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2. Fertilization method 1 The base fertilizer is applied in combination with deep ploughing in the autumn, and organic fertilizer is the main. Apply 1 kg of high-quality soil or compost per kg of fruit (0.2%-0.25% nitrogen) or 0.005 kg of urea, 0.02 kg of calcium phosphate (mixed with soil fertilizer); 0.05 kg of grass ash (fruit expansion period) Or a compound fertilizer with a nitrogen, phosphorus and potassium content of 2:1:2. 2 topdressing time, frequency and dosage. When the young fruit is planted in the same year, when the new shoot grows to 10 cm, after each plant is applied with urea or bicarbonate in combination with watering, the plant will be decomposed with manure or organic fertilizer every Spring, and the water will be poured after application. In the fruit-bearing period, before the germination of the vine, after the defoliation and during the fruit expansion period, the fertilizer is chased once, and each time the granules are chased with phosphoric acid or urea, 6-10 kg. After picking fruit, chase diammonium phosphate or urea 6-10 kg per acre. After picking fruit, apply 2000-3000 kg of high-quality soil-fertilized fertilizer for 7-10 days per acre at 55 °C; use Guangtai Nutritional Injection Fertilizer once every other year.
Fertilizer management of pollution-free grapes
First, the fertilization of the vineyard 1. Fertilizer types should be fully decomposed or 50-55 ° C high temperature stacking 5-7 days of organic fertilizer, human waste, livestock and poultry fertilizer, cake fertilizer, green manure; inorganic fertilizers including plant ash, nitrogen Various fertilizers, compound fertilizers and micro-fertilizers of phosphorus and potassium, but nitrate nitrogen fertilizer cannot be used, and the ratio of organic nitrogen to inorganic nitrogen does not exceed 1:1.
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