Level land and apply basic fertilizer: Common kidney beans should be selected from corn, wheat, millet, sorghum and other cereal crops as a former crop, and should not be used as a continuous crop or re-planting with legume crops, etc. When the common bean bean leaves are unearthed, the ability of the top soil is weak, and if the soil compaction or the quality of the soil preparation is poor, it is easy to emerge unevenly or lack of seedlings. In addition, roots of common kidney beans are rooted and require fertility, deep soil, and well-drained sand loam. The land reserved for spring sowing should be ploughed in autumn (such as in the northeast and northwest regions) and watered in the next spring for about 10 days before sowing. For each hectare, 6-8 tons of organic fertilizer and 450 kg of superphosphate can be applied as the base fertilizer, and then the land can be cultivated. Due to more rainwater in the southern region, it is generally necessary to plant ridge beans, ridge width is 3 meters, and the depth of drainage ditches between ridges is 0.3 meters, 6 rows of beans are planted in each ridge, before or after ridging, and mix into right and wooden ash, The farmyard manure of charcoal or potassium sulfate is 10-15 tons per hectare.
Selecting good varieties to ensure seed quality: At present, some fine varieties have been gradually promoted in production, such as red kidney beans, small white kidney beans, cowpea kidney beans, early green beans, and disease-free high-yield small black kidney beans suitable for export. The bean seed is preferably a healthy seed harvested in the last growing season. Before sowing, drying seeds for 1 to 2 days can promote seed ripening and increase germination rate.
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