Peanut growth habit
1. environment: peanuts generally grow in sandy land with warm climate and moderate rainfall, which can fully meet their growth needs and promote their good growth.
2. Temperature: Peanut seeds need higher temperature for germination. The suitable temperature for the germination of pearl bean seeds is 12- 15℃, and that of common seeds is 15- 18℃.
3. Water quantity: Peanut is drought-tolerant, but it needs more water, which has the greatest influence on flowering and pod setting. Drought at this stage will affect flower bud differentiation, flowering, fertilization and fruit needle elongation.
Appearance characteristics of peanuts
Appearance: Peanut is a kind of millet, with nodules, stems and branches at the edge, opposite leaves, stems at the base of petiole, oval to obovate, obtuse top, covered on both sides, eyelashes at the edge, and interconnected veins to form a network.
Flowers: The flowers of peanuts are very small, the bracts are lanceolate, the corolla is yellow or golden yellow, the fruit is pod-shaped, and the shell is mostly yellow-white, but also yellow-brown or yellow.
Origin: Peanuts are mainly grown in Asia, Africa and America, among which Henan, Shandong, Hebei, Guangdong and Liaoning are the main producing areas in China.
Environmental conditions for peanut growth
Seedling stage: the time from sowing to emergence of peanut is short, generally 5- 15 days, and the seedling stage is from its seed emergence to the first flower.
Flowering period: The flowering period of peanut is from seedling stage to the appearance of young fruit in the shape of a chicken's head, which is the next flowering period of peanut.
Pod-setting period: The pod-setting period of peanut is from flowering to complete emergence of fruit. During this period, peanuts began to pod and the fruit began to get bigger.
Maturity: After the pod-setting stage of peanut, the fruit begins to become full, and then the fruit matures. This period of time is its maturity.