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Second, fertilization and watering technology. After the grapes are planted, they grow in a place for several years or ten years. The nutrients in the soil are limited. Therefore, it is necessary to add organic fertilizer and fertilizer to the soil every year to meet the needs of the grape's annual growth and results.
Grape growth requires not only a large number of nitrogen, phosphorus, potassium, but also trace elements such as calcium, boron, zinc and magnesium. In addition to the application of organic fertilizer in winter, 5 to 10 days before the spring germination every year, 25 to 30 cm from the root, 20 cm deep groove on the antegrade side, 15:15:15 compound fertilizer per acre 30 ~ 40 kg, plus 10 kg of urea, 3 to 5 kg of borax and zinc fertilizer, watered once after covering the soil. From the beginning of May to the middle of the year, the ditch at the same position on the other side of the line during the spring season, and 20 to 30 kg of high-potassium compound fertilizer per acre. It has a very significant effect on increasing production and improving quality.
In the initial stage of coloring one month prior to fruit ripening, spraying 0.2% to 0.3% of potassium dihydrogen phosphate can promote berry coloration, increase sugar content, promote maturation, and play an important role in flower bud differentiation in the second year.
Huaxian Agricultural Technology Center Liu Xiuling
Soil, fertilizer and water management points of the vineyard
First, soil improvement. Grapes are densely planted in production. The roots are cross-dense in the planting ditch. The nutrition in the soil can not meet the needs of many years of growth and results. Therefore, it should be rotated for deep turning and fertilizing every year. Generally, the deep turning is 0.5-0.6 m. 2 to 3 tons of fertilizer, or mixed with some organic matter to improve soil. Conditional measures such as tree cover and grass can be adopted to increase winter ground temperature, reduce soil water evaporation, inhibit weed growth, reduce soil compaction, soil erosion, increase organic matter, and facilitate grape root growth.
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