Cowpea nursery: Cowpea is warm and the seed germinates at 25 to 30 degrees Celsius. Seedlings grow at a temperature of 20 to 25 degrees Celsius. In early spring, kidney beans are mostly transplanted with seedlings, and seedlings can be grown in cold beds and plastic sheds. Kidney beans have higher temperature requirements than kidney beans, and sowing dates are later than those of kidney beans. The middle and lower reaches of the Yangtze River generally begin sowing in mid-to late March. Use 40 to 60 kg per hectare. In order to protect the root system, we often use nutritious lotus seedlings, sowing 3 to 4 seeds per seedling, soaking and moisturizing after seeding. After emergence, the seedbed is maintained at 20 to 25 degrees Celsius during the day and 15 to 18 degrees Celsius at night. Pay attention to ventilation to allow the seedlings to see more light and prevent the seedlings from growing. Seedling temperature should not be too low, to prevent cold air invasion, so as not to rust root. Kidney bean seedlings should be transplanted, usually with two true leaves to plant Daejeon. Soybean Seedling: Soybeans are warm, seed germinating temperature is 15 to 20 degrees Celsius, critical low temperature is 6 to 7 degrees Celsius. The optimum temperature for seedling growth is 20 to 25 degrees Celsius. Due to the difference in maturity among varieties, the sowing time differs greatly. Early maturing varieties usually planted from early February to mid-April are often transplanted with seedlings, and late-maturing varieties can be broadcast live. Sowing rate is 40 to 50 kg per hectare. It is advisable to spread the sown pods on the surface of the bed so that they do not overlap with each other; for the pods for nutrition, three to four pods per pod are sown, and the mulch after sowing is 2 to 3 cm thick. The bed covers the film to increase the temperature and moisture. Seedlings should be adequately lighted, maintained at 20 to 25 degrees Celsius, bed soil moist, and promote seedling growth. The cotyledon of the seedlings is unfolded and the true leaves are planted in the field. The seedlings of the nutrition seedlings can be extended until the second compound leaves emerge.
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Kidney bean nursery: Kidney beans are thermophilic vegetables, and the seeds germinate at a temperature of 20 to 25 degrees Celsius. The seedlings are grown at a temperature of 18 to 20 degrees Celsius, and the seedlings grow at a critical temperature of 13 degrees Celsius. The temperature is low and the roots are easily rusted. The beans are moist but not resistant to moisture and the sowing bed should not be too wet. The bean is only planted once in the northern region of China—such as in Northeast China and Inner Mongolia, and sown in early May. It is mainly broadcast live; in the southern and spring of China, it can be cultivated in the spring and autumn, and it is broadcast live in the fall. The bean roots are easy to cork and the regeneration ability is weak. In order to avoid root damage, seedlings are generally transplanted and the seedling age is 7 to 15 days. Sowing period from early February to early March. Most beans use dry seeds for direct seeding, but bean seeds can infect many diseases, such as anthrax, leaf burn disease, and viral diseases. Therefore, it is better to disinfect the seeds before sowing, and to live without germination. Commonly used bean seedlings in cold beds, should pay attention to uniform seeding when sowing, do not allow seeds to overlap each other. For each hectare, 40 to 50 kilograms of seed species and 45 to 60 kilograms of dwarf species are used. After sowing, compaction and cover the soil 2 cm, then cover the insulation. The seedbed remains at 20 to 25 degrees Celsius after sowing and the cotyledon drops to 20 degrees Celsius after unearthing. Watering is generally not done at seedling stage. Can also be used to nurse seedlings, planted before planting foot water, to be infiltrated after the water, each seed sowing 3 to 4 seeds, after sowing cover film cover insulation. When the seedlings are released, one time seedlings and supplementary seedlings are promptly prepared, and 2 to 3 seedlings per nutrient are maintained. Colonization occurs when the first pair of true leaves is about to unfold or just unfold.