The growth process of soybean is soybean growth through seedling, seedling, bud differentiation, flowering and podding, bulging and maturity. Successful completion of each period of growth will be able to survive, the conditions are suitable, 4 to 6 days after sowing can be seedling, then we must pay attention to each period to give the water, light and other factors.

The radicle first extends from the ovule pore, and when the radicle elongates to the length of the seed, it is called germination. The embryonic axis elongation, the seed coat off, cotyledons with the hypocotyl elongation exposed soil surface, when the cotyledons unfolded called seedling. The conditions are suitable, 4-6d after sowing can be seedling. More than half of the cotyledons in the field are in the seedling stage.

Analysis of the growth process of soybeans

From seedling emergence to flower bud differentiation is the seedling stage. After the emergence of two cotyledons, the young stem continues to elongate, above the two opposite single leaves then unfolded, this time called the single-leaf period. As the young stem continues to elongate, the first compound leaf is called the 3-leaf stage. 3-leaf stage above ground part of the growth rate is slower, the underground root system grows faster to form rhizomes.

At the end of this period, the root system is initially formed and begins to require more water and nutrients. Seedling period of about 20-25d, 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. From the beginning of bud differentiation to the beginning of flower bud differentiation period, is also the branching period. Generally about 25-30d.

When the compound leaves appear 4-5, the lower part of the main stem began to branch, and at the same time, the differentiation of flower buds. The differentiation of soybean flower buds and bud emergence is carried out under short sunlight conditions. Flower buds began to differentiate the process is: first appeared hemispherical flower bud primordium, followed by the formation of ministry piece in front of it, and then the formation of the tube; followed by the differentiation of keel petals, wing petals and flag petals.

The annular stamen primordium successively differentiated, in the center of the stamen pistil began to differentiate, and the ovule primordium appeared; then into the ovule, the anther primordium differentiation, the flower organ gradually grows, and finally successive formation of buds, pollen and embryo sacs, complete the flower bud differentiation. Flower buds began to differentiate, the plant entered the period of reproductive growth and nutrient growth in parallel.

This time it is necessary to strengthen the fertilizer management, and pay attention to the coordination of nutritional growth and reproductive growth, to achieve the strong plant, branches, flower buds, flower health requirements.