From peanut sowing to 50% of seedlings unearthed, and the first real leaf is unfolded, which is the seedling stage of germination. Germination takes 5- 15 days, and the specific emergence time is related to temperature. The emergence time of spring sowing peanuts is long, which may take 8- 15 days, while the emergence time of summer sowing peanuts is much shorter, generally 5- 10 days.

2. Seedling stage

From 50% seeds to 50% plants, the first flower is at the seedling stage. The seedling stage is generally 20-35 days, and the specific time varies greatly due to varieties and planting seasons. The seedling stage of spring sowing is generally 25-35 days, and summer sowing is 20-25 days. Some early-maturing summer sowing varieties even take only 20 days.

3, flowering needle period

The period from 50% of plants flowering to 50% of plants appearing young fruits with the head of a rooster is the flowering needle stage, which is referred to as the flowering needle stage. Flowering period 15-35 days, which varies greatly according to planting season and variety. The flowering period of spring sowing peanuts is 25-35 days, and that of summer sowing peanuts is 15-20 days. The flowering period should be carefully maintained.

4. Pod setting period

The pod setting period is from 50% plants to 50% plants full fruit. Pod setting period is generally 20-40 days, sowing in spring is 30-40 days and sowing in summer is 20-30 days. The growth characteristics of this period are that a large number of fruit needles are buried in the soil to form young fruits or fruit cakes, and the nutritional growth reaches the peak, and the water consumption of water and fertilizer reaches the peak. It is necessary to ensure sufficient moisture to prevent dead seedlings and pests. In vitro fertilization can prevent premature aging and promote pod development.

5. The fruit is fully ripe

From 50% plants to most pods, it is the fruit maturity period, which is referred to as the full fruit period. The full fruit period of spring sowing peanuts is 40-50 days, and summer sowing peanuts is 30-40 days. The growth characteristics of this period are the decline of vegetative growth, mainly reproductive growth, and the nitrogen fixation of nodules stops. During this period, topdressing outside the roots can prolong the functional period of leaves and improve the fruit setting rate. Pay attention to timely harvesting to prevent fruit germination.