Is it okay to plant red adzuki beans during the summer solstice in Shangzhi area?

It is best to plant red adzuki beans during the summer solstice in Shangzhi area, generally in mid-May in the southern region and in late May in the central and northern regions.

Biological Characteristics

Adzuki bean Adzuki bean likes warmth and light, and is resistant to waterlogging. The entire growth period requires an effective accumulated temperature of 2000-2500°C above 10°C, and seedlings generally begin to sprout above 8-12°C. Adzuki beans are sensitive to light. Sowing them too early prolongs the growth period and does not mature earlier. Therefore, when species are introduced from high latitudes to low latitudes, they will mature earlier, and when species are introduced from low latitudes to high latitudes, the maturity period will be extended.

The growth length of adzuki beans varies depending on the variety. The short growing season can be 60-90 days; the long growing season can be 80-120 days. Adzuki beans need the most water before and after flowering. High temperatures and drought during the flowering and pod-bearing period can easily cause flowers and pods to fall; if they are too wet, the plants will easily lodging. During the drum-grain maturity stage, sunny weather is conducive to photosynthesis and helps increase grain weight. Adzuki beans grow best in loose, humus-rich soil. Adzuki beans grown on sandy soil are red and shiny. Adzuki beans grown on soil are black and dark red. Adzuki beans have strong adaptability to soil and can grow in both slightly acidic and slightly alkaline soils.

Soil preparation and fertilization

Adzuki beans require more nitrogen fertilizer. Although there are rhizobia bacteria to fix nitrogen, increasing the application of farmyard manure can significantly increase production, especially increasing phosphorus and potassium fertilizers in appropriate amounts can increase production. more significant. If no base fertilizer is applied, during the growth period of adzuki beans, apply available nitrogen and phosphorus fertilizers 5-6 days before flowering, which can promote the increase of flower pods and prevent flowers and pods from falling.

Planting methods

Adzuki beans can be grown as monoculture or as intercropping or intercropping. Since the shade-tolerant species are mostly grown in intercropping methods,

cooked red adzuki beans

are rarely grown alone. The main forms are:

1. Adzuki beans are interplanted with spring corn, sorghum and millet. Spring corn and adzuki beans are interplanted in a 1:1 or 2:2 pattern. Generally, after the corn seedlings are established, adzuki beans are interplanted between the corn rows.

2. Adzuki beans are mixed with summer corn and summer cereals. When summer corn or millet is sown, adzuki beans should be sown subsequently. When planting seedlings, pay attention to leaving a certain number of adzuki bean seedlings between the corn plants.

3． Interplant cotton with adzuki beans. After cotton emerges in spring, a row of red beans is sown in a large row of holes. Use small and early-maturing varieties of red beans. This interplanting method is beneficial to the ventilation and light transmission of the lower part of the cotton, which can reduce the shedding of buds and increase the number of peaches. Sometimes adzuki beans are replanted in areas lacking seedlings for cotton, peanuts, sweet potatoes and other crops.

4. Spring sweet buds are interplanted with adzuki beans. Sow red beans in ditches and piers in the sweet potato field, with 5-6 plants in each pier. Adzuki beans mature early. When the adzuki beans are harvested, it is the second peak expansion period of the sweet potato tubers. It does not affect the sweet potato yield and can harvest dozens of kilograms more adzuki beans.

Field management

In order to promote the development of the root system during the adzuki bean seedling stage, more plowing is required to loosen the soil, which is also beneficial to the growth of root nodules. When growth is vigorous after flowering, you can top it appropriately and remove ineffective flower branches to concentrate nutrients into the pods and promote plump seeds. Before and after flowering, adzuki beans require the most water. A lack of water at this time will cause a large number of flowers and pods to drop. Therefore, water should be watered in time when there is a drought. Control aphids and red spider mites in the early stages of adzuki bean growth, and prevent borers in the middle and later stages of growth to prevent the pods from being eaten. Control mung bean weevil during storage. Before storage, use 50℃ high temperature to kill insects; use pesticides to fumigate and kill; and store in anoxic conditions.

Harvesting and Storage

Spread out the adzuki beans to dry them, put them into plastic bags in units of 3 to 5 kilograms, and then add some chopped ones. Dried chilies and sealed. Place the sealed plastic bag in a dry, ventilated place. This method can prevent moisture, mildew, and insects, and can keep adzuki beans from going bad for a year. You can also soak the adzuki beans in boiling water for ten minutes, then take them out and dry them in the sun, and store them in a tank. They can be stored for a long time and will not breed insects. Putting two or three cloves of garlic into a container or bag containing adzuki beans can prevent them from being eaten by insects for 2 to 3 years.