Planting techniques of winter soybean

The main results are as follows: 1. the sowing time of winter soybean is quite flexible, and there is no significant difference in sowing yield from early April to early June. In practice, in order to obtain suitable basic seedlings of winter soybean, in addition to correctly determining the number of planting nests per mu to provide the basis of density, we should generally sow seeds in a period of time before the closure of corn forest, so that the bean seedlings have formed the necessary nutrients before shade aggravation. it is beneficial to ensure the basic seedlings. In the planting area, it is appropriate to sow seeds with corn or later, that is, in the middle and last ten days of April, and the clear planting area of Xiaochun should sow seeds in the first and middle of May.

2. The planting mode of winter soybean is related to the plant type characteristics of the varieties used. The convergent varieties have double rows and double plants in the corn row, while the tall and luxuriant varieties should plant a single row and double plant in the middle of the corn row.

3. The key point of pre-forest management is to strengthen seedlings and control injured seedlings of underground pests. Can be used to kill the enemy, insecticidal double and other drugs to control corn insects at the same time. In order to increase the resistance of seedlings, phosphate fertilizer should be used as seed fertilizer and plant ash as cover fertilizer when sowing. In the process of seedling growth, fertilizer should be applied at the same time according to the seedling condition.

4. To manage the weak seedlings of winter soybean after coming out of the forest, we should plough, cultivate the soil, support the seedlings and lift the seedlings with clear dung water in time, so as to promote the branch and plant growth. Aphids and borers often occur seriously in the flower and pod stage, which should be controlled in time, and the plant is larger in the later growth stage, and the lack of nutrient supply often leads to premature senility, so the supply of three elements or extra-root topdressing should be properly supplemented. In addition, if Rain Water is sufficient, cause Tiaoteng crazy growth, so that bean curls mutual shade, should straighten out Tiaoteng growth direction, so that bean curls do not shade each other.