The growth cycle of pepper includes four stages: germination stage, seedling stage, flowering and fruiting stage and fruiting stage. The germination period, from seed germination to the appearance of the first true leaf, is generally about 10 days. The nutrients in germination stage are mainly supplied by seeds, and the absorption capacity of young roots is very weak. The seedling stage is from the first true leaf to the first bud. It takes 50 to 60 days. The seedling stage is divided into two stages: 2 ~ 3 true leaves are the basic vegetative growth stage, and after 4 true leaves, vegetative growth and reproductive growth are carried out simultaneously. ? The flowering and fruit setting period, from the first flower bud to the first flower fruit setting, is generally 10 ~ 15 days. The contradiction between vegetative growth and reproductive growth is particularly prominent in this period. The relationship between growth and development, vegetative growth and reproductive growth, and aboveground and underground growth is mainly regulated by measures such as water and fertilizer to achieve the balance between growth and development. ? The fruiting period, from the first fruit setting to the end of harvesting, is a fruiting period, which takes a long time, generally about 50 ~ 120 days. The fruiting period is dominated by reproductive growth, and the vegetative growth is continuous, which requires a lot of water and fertilizer. During this period, it is necessary to strengthen the management of water and fertilizer, create good cultivation conditions, promote the prosperity of seedlings and fruits, and continue to bear fruit in order to achieve the goal of bumper harvest. The growth and development of pepper can be divided into germination stage, flowering and fruiting stage and fruiting stage. The early growth stage of pepper is the germination stage, which is usually unearthed about 5 ~ 8 days after sowing, and the first piece appears about 15 days, and it is not exposed until the seedling emergence. The first pepper. The fruiting period is from fruit setting to seedling drawing. The suitable temperature of pepper is between15 and 34 degrees. The suitable temperature for seed germination is 25 ~ 30℃, and it takes 5 ~ 7 days to germinate. It will not germinate below 15℃ or above 35℃. The seedling stage requires high temperature, 25 ~ 30 degrees during the day and 15 ~ 18 degrees at night. If you are not tolerant, pay attention to the cold. If the pepper is 35 degrees, it will drop flowers and fruits.