Soybeans (edamame beans) when to control prosperity? How to control prosperity?

In a few months, it will be the harvest season for soybeans, and if we want to have a high yield, we need to control the prosperity of soybeans, especially in the southwest, where the high temperature and rain in summer can easily cause the growth of soybeans, make them fall flowers and pods, and reduce their yield. when will soybeans (edamame beans) flourish? How to control prosperity?

Field performance of prosperous growth of soybean

The main results are as follows: (1) the branches and leaves are luxuriant, the ventilation and light transmission is poor, and the leaves are completely closed.

(2) the upper leaves are thick and green, and the size is close to that of adult palms; the lower leaves turn yellow and begin to fall off.

(3) except for a few inflorescences or pods in the upper part of the main stem, there are few inflorescences or pods in the lower part of the main stem and branches, which are easy to fall off, and the pod setting rate is low, and some plants even have no flowers or pods.

Soybean growth control time

Paclobutrazol can be sprayed from 2-leaf stage to full flowering stage, and the effect of paclobutrazol is the best in early flowering stage. Generally use 180-250 mg / L paclobutrazol solution 40-50 kg per mu. High concentration and high dosage are used for soybean growth, low concentration and low dose are used for soybean growth, and weak soybean growth should not be sprayed. The spraying time should be 3-5 pm on a sunny day, and it should be re-sprayed in case of rain within 2 hours after spraying.

Chemical boom control technology

Seed dressing

The selected seeds are weighed according to the required seed quantity of the field and placed in a plastic bag, 5% uniconazole wettable powder is added, and the dosage of each kilogram of seed is 160mg. Shake back and forth several times, mix the seeds evenly and sow the seeds immediately.

Foliar spraying

From early flowering to full flowering, Guangqi soybean can be sprayed with 50g foliar fertilizer and 15-30kg water.

Manual boom control technology

During the flowering and podding stage of soybean, artificial methods such as leaf thinning, peeling and vegetative plants can be adopted to make the plant population ventilated and transparent for the fields that can not be effectively controlled by chemical control. The specific technologies are as follows:

(1) tapping and thinning branches and leaves. In the early stage of vigorous growth, pruning and cutting leaves were carried out in time to create a reasonable population structure. When hitting the tip, it is generally appropriate to pinch off the tender tip of 3cm from the top of the main stem. When cutting leaves, cut one leaf to the upper and middle branches, and cut off some fruit branches with fewer flowers and pods to ensure that the main stem and fruit branches with more flowers and pods blossom and bear pods.

(2) get rid of nutritious plants. For soybean overgrowing serious fields, the plants without flowers and pods or those with few flowers and pods should be pulled out in time.