Is it better to plant broad beans deep or shallow?

After the cold dew solar term, the temperature outside is getting lower and lower. For farmers, this is a good time to plant overwintering broad beans. Broad bean is the third largest winter edible legume crop in the world, which belongs to minor grains and is rich in nutrition. It can be used as traditional rations, modern green food and nutritional health food, and is deeply loved by the public.

The best time to plant broad beans is before the Double Ninth Festival, and the harvest should not exceed the Dragon Boat Festival next year. This is because broad beans are temperate plants, which are neither heat-resistant nor cold-resistant. The suitable temperature for germination is 65438 05℃. If the temperature exceeds 30℃, they will grow poorly, and if the temperature is below 4℃, they will freeze to death. The suitable temperature in the growing period is about 65438 06℃, and if the temperature in flowering period is too low, it will not be able to pollinate and bear fruit normally.

Sowing time

Therefore, sowing date is very important. Early sowing, high temperature, excessive growth, easy to suffer from freezing injury, low late sowing temperature, difficult emergence, few branches and low yield. Therefore, sowing before the Double Ninth Festival can ensure that the flowering period can avoid frost damage and harvest before the hot weather of the Dragon Boat Festival next year. Broad beans are not easy to germinate because of their large particles and thick seed coat, and the external temperature is slightly lower when sowing.

Proper burial is beneficial to increase the ground temperature, and at the same time, it is convenient for broad beans to absorb water, thus promoting early germination and full seedlings. However, it is not necessary to bury broad beans deeply, and the depth is generally about 5 cm. If it is too shallow, it is not conducive to the rooting of broad beans, and in the later stage, the broad beans have many pods, the roots are not firm, and the plants are easy to lodging or break branches. If it is too deep, it is difficult to dig broad beans, which is prone to the phenomenon of lack of seedlings and broken ridges.