In recent years, some farmers have reduced their paddy fields to harvest lotus seeds for Putian. Although they have obtained good economic benefits, due to technical factors and other reasons, output has declined year by year. Theoretically, more than 450 kg of shell lotus can be produced per mu of paddy field, but only 75 to 100 kg of production is generally produced in production.
The specific approach when selecting Putian is that the soil is too shallow or too deep to be conducive to the high yield of lotus seeds. This kind of paddy field is not fertile, it is not conducive to the rapid growth of lotus root, small flowers, Peng small, lotus seeds hundred light weight, low yield. In particular, no organic fertilizer was applied, neither farm nor green manure, and only calcium superphosphate and ammonium bicarbonate were used. The lack of necessary potassium fertilizer and trace elements was also an important factor in reducing production. Therefore, paddy fields should be plowed twice before planting, and human and animal manure should be applied for 1,000 to 1,500 kilograms, or high-quality soil manure 2000 to 2500 kilograms, with the use of superphosphate 35 to 50 kilograms, and potassium chloride 5 to 7.5 kilograms. Requires muddy live fat and lay a foundation for high yields.
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