How to make the soybean planted in the soil germination?

Soybean planted in the soil, the conditions are suitable for sowing 4-6 days after the seed can emerge.

The whole life of soybean should go through the process of seed germination, seedling emergence, seedling growth, branching, flowering, pods, bulging grains, maturity and so on, which can be divided into six reproductive periods.

1)Seedling emergence

The radicle first protrudes from the bead hole of the ovule, and when the radicle elongates to the same length as the seed, it is called germination. Embryonic axis elongation, seed coat off, cotyledons with the hypocotyl elongation of the soil surface, when the cotyledons unfolded called seedling. More than half of the cotyledons in the field is the emergence period.

2)Seedling stage

From seedling to flower bud differentiation is the seedling stage. Seedling period of about 20-25 days, accounting for the entire reproductive period of l / 5, this period is the long root period; attention should be paid to squatting, strengthen field management, to achieve the seedling full, seedling uniform, seedling strong, to lay the foundation for the abundant production.

3) differentiation period

From the beginning of bud differentiation to the beginning of the flower bud differentiation period, is also the branching period, generally about 25-30 days. At this time it is necessary to strengthen the fertilizer management, and pay attention to the coordination of nutrient growth and reproductive growth, to achieve the requirements of strong plants, branches, buds, flowers, healthy.

4) Flowering and podding period

From the beginning to the end of the flower for the flowering period, from the soft and small pods appear to the formation of young pods for the podding period, out of the soybean flowering and podding is in parallel, so the two periods are commonly known as the flowering and podding period. The flowering and podding period is the most vigorous period of soybean fertility, is the need for water and nutrients most of the period, at the same time need sufficient light. In the pre-seedling full, seedling strong, branching on the basis of more, the flowering period should be strengthened fertilizer management, and make good ventilation, in order to achieve more flowers, pods, grain and reduce the requirements of flower pod shedding.

5) Drumming period

Soybean fried greens from the pod grains began to expand, until the maximum volume and weight of the end of the drumming period. Drum grain period is an important period of soybean seed formation, at this time soybean fertility will determine the normal number of pods per number of grains, grain weight and seed chemical composition. To ensure the normal development of seeds to meet the two conditions: ① plant itself is rich in storage material, the root system is not senescent, the leaf assimilation is strong; ② to have sufficient water supply.

6) maturity

Leaf yellowing off the road, dehydration, showing varieties of intrinsic traits, the water content of the seed has been reduced to less than 15%, until the pods have a slight sound when shaking the plant, that is, the maturity period. At this time should reduce soil moisture, accelerate seed and plant drying, to facilitate timely harvesting, while preventing too much fertilizer and water caused by greed and late maturity, affecting timely harvesting and stubble.