The first application of potassium sulfate fertilizer in my hometown is on the wine grape, in the hard-core color before the mu application of potassium sulfate 30-50 kg, can increase the alcohol glucose level 0.5-1 degrees. Later, we applied it to the apple tree. In the fruit enlargement period, 40-60 kilograms of Mushi can be used to increase the fruit and increase the sweetness. In the last two years, we have also conducted tests on chestnuts. The test results show that chestnuts with potassium sulfate have a large size, sweet taste, and good color and quality. Application method: When the chestnut enters the fruit enlargement period, it will be applied after the rain. If it is dry, it should be watered in an appropriate amount, and water should be used to fertilize it. In the early fruit period, mu will be applied to 10-20 kg of potassium sulphate, and 20-30 kg will be applied to trees in the full fruit period.
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