Optimum planting time of beans in autumn

The best planting time of autumn beans is from September to 65438+ 10.

The planting temperature of beans is generally around 25℃, so it is usually planted in March and April in spring and September and1October in autumn, and the temperature is suitable at this time. To choose high-quality varieties, put the selected seeds in the sun for 1 ~ 2 days, choose a suitable planting place, then prepare the soil and apply base fertilizer.

Bean is an annual twining vine or almost erect herb with many branches, tall plants and curved branches. Leaves opposite, petiole short, suborbicular; Flowers are small, white, fragrant and polygonal; The fruit is angular, spherical and dark brown; The seeds are small, sickle-shaped and the epidermis is smooth; Flowering in May-June; The fruiting period is July-August.

Beans originated in India and Myanmar, and were introduced to China in Han Dynasty. Now they are planted in most parts of the country. Beans are resistant to high and low temperatures and belong to short-term crops. They like strong light, and when the light is weak, it is easy to drop flowers and pods. They are drought-resistant, but not waterlogged. The propagation methods of planting beans in fertile and loose soil mainly include cutting propagation and sowing propagation, and sowing propagation is generally more convenient in life.

Breeding method of beans

1, land selection

The growth characteristics of cowpea determine that it requires high soil conditions and plot environment, and cowpea has short root system. Therefore, the soil porosity in the planting area is required to be moderate, and continuous sowing should be avoided as far as possible for the normal growth of cowpea roots.

2. Soil preparation and fertilization

Before cowpea planting, it is necessary to carry out corresponding soil preparation operations to effectively clean up the stubble of the previous crop. At the same time, weeds and sundries on the surface should be removed. In order to ensure that cowpea planting is not affected by pests and diseases, it is necessary to burn all weeds and previous crops after clearing, so as to reduce the probability of infection when cowpea planting.

After all the debris on the surface of the plot is removed, it is necessary to do the corresponding deep ploughing work, and the depth is controlled at 30 cm. After 3-4 days of deep ploughing, ridging should be carried out to ensure that the ridge spacing is 70 cm. Special attention should be paid to the application of sufficient base fertilizers, mainly nitrogen, phosphorus and potassium fertilizers, according to the nutrient requirements of cowpea growth to ensure the normal growth of cowpea.

3. Seeding and propagation: when the temperature is stable at 10℃, seeds can be sown, and the ridges are plowed manually in a single row with a spacing of 30-32 cm, and three or four seeds are sown in each row, and the soil is covered by 3 cm.

The above contents refer to Baidu Encyclopedia-Cowpea.