Cabbage is a kind of potassium-promoting crop, but for a long time, some vegetable farmers blindly pursued high yields and blindly increased the amount of nitrogen fertilizer without applying potassium fertilizer, which caused the quality of Chinese cabbage to decline, which affected its storage and commercial properties.
1. Effect of Potassium Fertilizer Application of Potassium Fertilizer The obvious test results showed that: Under the same conditions of nitrogen and phosphorus fertilizers, Chinese cabbage was increased with potassium fertilizer (50% potassium sulfate) 18 kg/mu, 2866 kg per mu higher than the control, and the yield was as high as 33.2%. The average yield of cabbage per kilogram of potassium sulfate is 159 kilograms.
Second, enhance disease resistance Potash fertilizer can significantly improve the disease resistance of cabbage, reduce the incidence of disease, according to statistics, the incidence of cabbage disease application of potassium disease was only 1.9%, the incidence rate in the control area was 11.4%, the incidence was reduced by 9.5%.
Improve the cabbage product rate The use of potash fertilizer in Chinese cabbage is tight and the virtual leaves are small. The Chinese cabbage in the control area is not tight and the difference is obvious. In the winter storage, there are generally 3 tightly packed green leaves outside the standard commercial dish. The cabbage product rate with potash fertilizer is 88.5%-91.2%, and the comparison area commodity rate is 80%-83.1%. The addition of potash fertilizer increases the cabbage product. Rate, thus improving economic efficiency.
Third, improve the quality of the test showed that: the application of potassium fertilizer Chinese cabbage than the control of the total amount of 7 kinds of amino acids increased by 31%, vitamin C content increased by 4.2 mg/100 g, nitrate reduced by 142 mg/kg, and increased storage stability .
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