How to grow high yield soybeans? What is the sowing rate per mu?

Soybean is one of the main crops in China, not only can be eaten directly, but also can be processed into a lot of agricultural and sideline products, the market demand is large. So how do soybeans grow high yields? How much is the planting rate per mu?

I. How much is soybean planting per mu?

Soybean planting should be based on the characteristics of varieties, seed size to determine the amount of sowing per mu. Jindou 83, Fendou 8 and Dahuang 1, which are early-maturing, high-yielding, lodging-resistant and thick stems, were selected as soybean varieties.

Small seed under 6 - 7.5 jin per mu, medium seed per mu seeding rate of 10 - 12 jin, soybean seedling density per mu is not less than 25000 plants is appropriate, as long as the seeding rate adjustment accurate, generally can not thin seedlings.

II. How to grow soybeans with high yield?

1, planting time

The sowing date of soybean should be arranged from late March to early April, and the varieties with strong adaptability, good commodity quality, high yield, plump seeds, high emergence rate, short growth period, good shade tolerance, barren tolerance and fertilizer and water tolerance should be selected.

2. Seedling management

(1) check and supplement seedlings

After emergence, investigate the seedling situation in time, find that the lack of seedlings, cut the ridge, soak seeds with water or transplant seedlings in time to ensure that the whole seedlings.

(2) Promoting seedling growth

Seedling stage should be on the basis of the whole seedlings to promote early development, breeding strong seedlings, promote branching. For the field with deep soil layer and good fertility, the plant growth point can be removed in the morning of sunny day when the bean seedlings have 4~6 true leaves, or the excessive growth of winter soybean can be controlled by paclobutrazol and propranolol when the bean seedlings have 5~8 true leaves, so as to improve the number of effective pods and the fullness of seeds.

(3) Intertillage and weeding

Intertillage weeding combined with topdressing before ridge closure at flowering and pod stage can play the role of loosening soil, preserving moisture, cultivating soil and increasing soil permeability, which is beneficial to soil microbial activity and rhizobia growth, promoting soybean root development and healthy growth of plants.

3. Management of flowering and grain setting stage

(1) Flowering management

During this period, fertilizer and water management should be strengthened to promote more flowers, more pods and more seeds. Excessive water, plant growth, plant canopy and soil ventilation and light transmission is poor, resulting in flower drop pod, and even lodging. Long-term water shortage will inhibit flower bud differentiation, flower drop pod.

(2) Bulking stage management

The main targets of this stage are pod preservation, seed increase and plump promotion. At the early stage of grain bulging, if premature aging caused by malnutrition is found, foliar fertilizer should be sprayed in time.

4. Harvest of soybeans

Generally in late November to mid-December, when 1/3 pods turn green and brown can be harvested.

Warm Tip: In recent years, soybean and corn, fruit trees and other crops interplanting, not only improve land utilization rate, output, increase multiple planting index, but also improve soil fertility, increase farmers 'income. However, special attention should also be paid to pest control.