1. Time: It is best to plant in March-April or June-July every year. 2. Soil: loose, fertile, breathable and well-drained soil should be selected and disinfected before use. 3. Seed selection: select seeds with full seeds and shiny seed coats and soak them in warm water for 3-4 hours. 4. Planting: Put the treated seeds flat in the soil, cover them with a thin layer of soil and water them properly.

Brief introduction of beans

Bean is an annual vegetable of cowpea in Leguminosae, which is rich in protein and carotene, with high nutritional value and good taste. It is one of the popular vegetables widely cultivated in northern China, and its popularity ranks first among all kinds of vegetables.

Beans have strong adaptability and can be planted in open field or protected field. They are heat-resistant vegetables, resistant to high temperature and frost. When seeds germinate at 25~35℃, the germination rate decreases slowly, and the lowest temperature is 10~ 12℃.

Beans have developed roots and are drought-tolerant, but they need proper water. It is not advisable to water too much during germination and seedling stage, so as not to reduce the germination rate and make the seedlings grow in vain. Appropriate air humidity and soil humidity are needed during flowering and pod setting.