Spring is more suitable for planting beans, and the planting time is actually related to the local climate. If it is in North China, it is usually carried out in mid-April, so that the seedlings can grow well after the last frost period. If it is located in the south of China, it can be carried out in February-March.

Second, the spring bean planting method

1, site selection: the growth ability of beans is very good, and the requirements for soil are not high, but if you want to make the yield of beans higher, try to plant them on fertile and drainage land. Before planting, we should dig deep into the soil, and then sprinkle some organic fertilizer in the soil as base fertilizer to improve the fertility of the soil. The amount of fertilization should be determined according to the fertility of the soil. If the rain is good in this area, it is best to take drainage measures in advance, so that drainage will be more convenient in the later period.

2. Soak the seeds: The seeds of beans should be intact and free from insect eyes. Prepare some hot water, blanch the seeds in water, then take them out and cool them in cold water, keep the water temperature at 25-30℃, soak them for almost 4 hours, and then take them out to dry. If it is a purchased seed, you can sow it directly.

3. Sowing: Sowing can be done in holes. Put 3-5 seeds in each hole and cover it with soil. You can also plant seeds evenly in the soil by drilling holes, and then cover them with plastic film. When the seeds germinate, the film can be uncovered.

4. Maintenance: When the seedlings grow out, they need to be thinned according to their growth conditions, generally when the seedlings grow to 5-6cm. During the growth of seedlings, water should be added to keep the soil moist and not dry.

Water management technology of beans

1, flowering period

Beans like warmth in the growth process, can't stand frost, have less strict requirements on sunshine and are relatively drought-tolerant, but they need a certain amount of water when they germinate. If they are too dry in the early stage of planting, it will have a certain impact on the emergence of beans. But if there is too much water, there will be a shortage of seedlings.

Therefore, it is necessary to control water during the flowering of beans. If there is too little water at the flowering stage, the flowers will wither prematurely. Therefore, it is necessary to irrigate beans reasonably to meet the water demand of bean growth.

2, flowering scab stage

When the upper inflorescence of the bean begins to scab and the middle lateral vines begin to scab, the watering time should be controlled at 10 ~ 15 days, and the quality of the bean should be improved by ditching and spraying Dr. Hua and Guo elements.