The secret recipe for high-yield cultivation of beans, rational fertilization is the key.

It is necessary to choose a suitable sowing time for high yield of beans, spring sowing should be in March and May, autumn sowing should be in early August, planting should have good light and humidity, active and rational fertilization can promote flowers and fruits, artificial construction and vine introduction, and do a good job in the prevention and control of diseases and insect pests in advance.

First, planting time

Beans can be sowed about three times a year in dew-raised environment. Generally spring sows in late March and early May in late spring, and autumn sowing in early August. The temperature of these three periods is suitable for seed germination and growth, the temperature of germination and growth is about 30 ℃, and the temperature of flowering and buckling is about 28 ℃. The suitable time for planting is helpful to increase the yield.

Second, planting environment

Open-air planting is generally shaded, beans do not have high requirements for light, reasonable photosynthesis is conducive to blossom and pod, if the light is not enough, it is easy to drop flowers and fruits. The root system of bean is deep, so it is necessary to turn the soil when planting, and pay attention to keep the soil moist in the later growth to promote the rapid growth of the plant.

III. Rational fertilization

1. Apply base fertilizer

Base fertilizer is mainly based on rotten organic fertilizer, combined with the application of appropriate amount of compound fertilizer. Generally apply about 1000 kilograms of farm manure per mu, about 50 kilograms of superphosphate and 50 kilograms of ternary compound fertilizer, apply base fertilizer when ridging, open a small ditch on the planting ridge, and then pour fertilizer to cover the soil. After this method of fertilization, bean seedlings must not be planted directly into the ditch, and organic fertilizer ditch to maintain the distance around 15cm, so as to avoid fertilizer burning seedlings.

2. Apply the root insurance

Beans need a lot of phosphorus and potassium elements in the process of growth, which can be supplemented by root protection. Root application is rich in phosphorus and potassium elements, easy to dissolve water, high fertilizer efficiency, and it is easier to absorb beans compared with general compound fertilizer. so as to promote the appearance of beans plump, healthy and tender color.

3. Spraying foliar fertilizer

Beans often appear a variety of symptoms of lack of nutrients in the middle and later stages of growth, such as yellow leaves. When spraying foliar fertilizer at seedling stage and vine introduction, thick large and thick No. 1 can be selected and used only when yellow leaves appear. The effect is not so good.

Fourth, set up a fight

When the plant grows to the appearance of six leaves, you can build a herringbone frame with a bamboo pole first, which is conducive to plant climbing and ventilation. When the bean plant grows above 30cm, you can draw the vine manually and tie it to the shelf.

V. Prevention and control of diseases and insect pests

In the summer season of high temperature and humidity, there is a high incidence of bean diseases and insect pests. Common diseases and insect pests are aphids, cabbage insects, downy mildew and rust, which must be treated in time, and can be controlled by spraying triadimefon, avermectin and other germicidal insecticides.