How to do the appropriate sowing beans
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Common beans are suitable for cold weather, but should not be sown before the frost period is over. Early sowing, low ground temperature, slow emergence, easy to cause insect pests, diseases and bad seeds; sowing too late, affecting the ripening period and yield. There is a large difference in temperature between north and south China. Soybean sowing time should be adapted to local conditions. Generally 10 cm soil temperature is stable above 12~13°C before planting. The single bean of Heilongjiang Province is generally planted in mid-May; the Beijing region is sown from early April to early May; and the southern provinces such as Sichuan, Guizhou, and Yunnan are planted at the beginning of March in spring sowing and film-mulching. The sowing date can be about 20 days ahead of schedule. Summer sowing can be planted from May to June, and autumn sowing can be conducted from August to September. When the first compound leaves are to be established, the young seedlings should be set too late so as not to affect the normal growth and development of the plants. The density of seedlings should be determined according to the characteristics of the varieties and the local production conditions. Dwarf erect varieties can be planted properly, late-maturing varieties should be sparsely planted, barley soil should be densely planted, and fertile soil should be sparsely planted. The density of dwarf standing varieties ranges from 180,000 to 225,000 plants/ha, and the density of sprawling plants ranges from 120,000 to 150,000 plants/ha.