The seven-day growth process of soybeans is recorded as follows:

The first day put soil in a clear cup, put soybean seeds in it, water a few soybeans and put it in a ventilated and warm location.

On the second day the skin of the soybean seeds breaks and white roots grow.

On the third day the root sprouts begin to grow, along with a white bean sprout, which absorbs water and continues to grow downward.

On the fourth day the soybean's grow young shoots, which are slightly curved in shape and a soft yellow color.

On the fifth day the rhizome of the soybean sprouts is slightly longer and can be clearly seen. Young shoots of soybean skin off, there are two beans, low hanging close to the rhizome.

On the sixth day the rhizome of the bean sprouts begins to thicken and the bean clusters become wider and thinner.

On the seventh day the young shoots develop into leaves, and two leaves grow out of the middle of the dal, which are yellowish in color.

Growth habit:

Soybean sex like warmth, the seeds begin to germinate at 10-12 ℃, 15-20 ℃ is the most suitable, the growth of the appropriate temperature of 20-25 ℃, flowering pods period of the appropriate temperature of 20-28 ℃, the pods delayed in the low temperature, less than 14 ℃ can not bloom, the temperature is too high plant is the end of the growth of the early.

Seed germination requires more water, the flowering period requires the soil moisture content of 70% -80%, otherwise the bud shedding rate increases. Soybean absorbs less than 15% of the total amount of fertilizer before flowering, while the flowering and podding period accounts for more than 80% of the total amount of fertilizer absorption.