On the first day, I prepared a transparent plastic box, put soil in the box, caught some soybeans, buried them in the soil, about a centimeter deep, and poured some water on them.
I took the remaining soybeans. Look left and right. It's not as big as the composition! This ugly little thing is quite strange. Its color is light yellow, its figure is oval, and there is a thick and short black line on its head, like a solid "O" just after eating. How strange can it grow?
The next day, I couldn't wait to go to the balcony to see them. I was a little disappointed to find that the soil in the box had not changed.
On the third day, I was surprised to find that several small oval heads emerged from the dark soil, looking like a shy little girl with bright yellow heads hanging down. Thin stems don't seem to support this big head, so I lowered my head. I also found that there is a layer of skin under each head. My mother said, "Xiaolei may be hot. Take off your clothes!"
On the fourth day, the bean sprouts stopped bowing. They looked up. The color turned pale green, and they grew a lot. They are three centimeters tall. They look like a chubby number "7". I am so excited!
On the fifth day, Xiaoya turned from her head to her head. A crack appeared on her head and two leaves grew, just like a princess wearing a crown.
On the sixth day, the oval leaves opened, like the palm of your hand, or light green, and a breeze blew, swinging your slender body and dancing beautifully. Really beautiful!
Expansive material: a natural prerequisite for soybean growth;
1. Requirements for temperature
The lowest germination temperature is 6-8℃, and 10- 12℃ germinates normally. The optimum growth period is15-25℃; When the temperature after flower bud differentiation of soybean is lower than 65438 05℃, the development of soybean is blocked, which affects fertilization and fruiting. When the temperature drops to10-12℃ in the later period, grouting will be affected. ?
2. Requirements for illumination and photoperiod
Soybean is a short-day crop, that is to say, in the alternation of light and dark day and night, soybean needs longer darkness and shorter light time.
Photoperiodic response of soybean: introduction from north to south will accelerate maturity; The semi-vine type will become upright, the plants will become shorter and the fruits will be reduced. On the contrary, the introduction from south to north will prolong the growth period and make the plants taller, so it is not suitable to adjust the varieties greatly from north to south.
3. Soybean's demand for water
Soybean needs more water, 600- 1000 grams of water per l gram of dry matter, which is more than sorghum and corn. The demand for water in different growth stages of soybean is different. When seeds germinate, more water is needed in the soil to meet the needs of seed water absorption, swelling and germination. At this time, the absorbed moisture is equivalent to 120%- 140% of the air-dried weight of the seeds. The suitable maximum soil water holding capacity is 50%-60%, and the maximum soil water holding capacity is less than 45%. Although seeds can germinate, it is difficult to emerge.
Suitable season for soybean planting:
Soybean planting is divided into spring sowing and summer sowing. Spring sowing is carried out around Tomb-Sweeping Day, and the harvest period is September (August of the lunar calendar). Sow the wheat in summer after harvest, and harvest it from late September to mid-10.
Soybean related introduction:
Soybean belongs to the yellow seed of leguminous herb soybean. Soybean is widely distributed in China, and it is cultivated everywhere except in alpine regions. China is the first country in the world to grow soybeans and make bean products. Soybean alias is also called soybean and yellow soybean.
Nutritional value:
Soybean has high nutritional value, and is rich in protein, iron, magnesium, molybdenum, manganese, copper, zinc, selenium and other mineral elements, as well as eight essential amino acids and nutrients such as aspartic acid, lecithin, soluble fiber, glutamic acid and trace choline. According to the determination, the content of protein in1000g dried soybean can reach 40-50g, which is beneficial to the development of brain cells and the enhancement of memory.
Efficacy:
Soybean is flat in nature and sweet in taste, and has the effects of invigorating spleen and benefiting qi, invigorating stomach and moistening dryness, enriching blood, lowering cholesterol, diuresis and resisting cancer. Can be used for treating malnutrition, diarrhea, abdominal distension and emaciation, spleen deficiency, dyspepsia, pregnancy poisoning, cancer, boils, traumatic hemorrhage, and prostate diseases.