Pay attention to the application of potassium fertilizer in the middle and late stages of grape growth

Potash is important throughout the growth of the grapes, especially during fruit growth. Therefore, grapes are known as "potassium" crops. Potassium fertilizer can promote the fruit's fruit hypertrophy and maturity, improve the variety and storage capacity, promote the thick growth and maturity of the branches, and improve its ability to resist cold, drought, high temperature and resistance to diseases and insects.
After the fruit is placed in the fruit to the color change period, according to the soil fertility of the orchard, 5 to 10 kg of potassium sulfate per 5 mu of vineyard can be applied, or the potassium dihydrogen phosphate solution can be sprayed on the foliar surface, once every 7 to 15 days, even spray 2~ 3 times. It has a significant effect on promoting grape enlargement, early maturity, accelerating aging of branches and improving grape resistance. At the same time, the main diseases such as grape anthracnose and black pox are significantly inhibited.
When using foliar spray fertilizer, it should be carried out before 9:00 am and after 5 pm, and it should not be sprayed at noon high temperature. The leaves should be sprayed evenly on both sides, and 60 kg of fertilizer spray per acre is good.
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