Organic grape fertilizer management must keep up
Fertilization requirements: In the grape production park, green manure or compost is carried out in combination with “grass-culture (cultivation of chickens, ducks, sheep)â€. If chemical fertilizers are not used, and substances containing genetically modified organisms cannot be used as fertilizers, restrictions on the use of human excreta are required, and when they are used, they are fully decomposed and detoxified. Supplement the potash with ash, supplement the phosphate fertilizer with high-fine, non-chemically treated phosphate rock. Mainly based on Shiji fertilizer, applied in autumn, about 1000kg of organic fertilizer per acre.
Replenishment requirements: First, from germination to flowering, when the soil moisture is lower than 65% to 75% of the field water holding capacity; second, the new shoot growth period to the fruit expansion period, when the soil moisture is lower than 75% of the field water holding capacity; The third is the rapid expansion of the fruit, and the maturity of the new shoots, when the soil moisture is lower than 60% of the field water holding capacity; the fourth is the late evening or early morning of the fruit development, the soil moisture is lower than 70% to 80% of the field water holding capacity, a small amount Replenish water. Micro-sprinkler irrigation method is adopted to strengthen the monitoring of the surrounding water quality of organic grape production, so as to avoid the impact of water quality on organic grape production. When entering the rain period, when the soil moisture exceeds 85% of the field water holding capacity, the drainage is carried out through the gutters, drainage ditch and water ditches, so that no water accumulates in the rain stop ditch, and heavy rain is not flooded.
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