The growth process of tomato includes germination, growth (seedling), flowering and fruiting.

Germination: The seeds germinate until 1 true leaves appear. After the seeds germinate, the radicle first grows, then the hypocotyl breaks through the ground and the cotyledons are pushed out of the ground.

Growth: The period from the appearance of 1 true leaves to bud emergence is seedling stage, which includes two stages: true leaf core breaking, true leaf unfolding and flower bud differentiation.

Flowering: The plant germinates to form the 1 th fruit, and at this time it mainly performs vegetative growth.

Results: 1 inflorescence set fruit until all the fruits were picked.

First, budding

1, the time from seed germination to the appearance of 1 true leaf (broken heart) is the germination period. When the conditions are suitable, the time required is about 7-9 days.

2. Germinated seeds first grow radicles, then hypocotyls will break through the ground, and the top of cotyledons will be unearthed (the growth point breaks the heart to grow the first 1 true leaf), and the unearthed cotyledons will turn green after 2-3 days.

3. Seeds will continue to provide nutrition during germination.

Second, growth.

1, the time from 1 when the true leaves appear to bud is the seedling stage, which takes about 45-55 days.

2. Under normal circumstances, when the early-maturing varieties spread 6-7 true leaves and the mid-late-maturing varieties spread 8-9 true leaves, the inflorescence of 1 began to sprout, and the flower bud differentiation of the first three ears was basically completed.

3. The seedling stage needs to go through two stages, that is, the basic nutrition stage from the breaking of true leaves to the unfolding of 2-3 true leaves (this stage is mainly vegetative growth), and the flower bud differentiation stage after unfolding 2-3 true leaves (mainly vegetative growth and reproductive growth).

Third, flowering.

The flowering period of 1. is the period from plant budding to 1 fruit formation, and the required time is about 15-30 days.

2. The vegetative growth of roots, stems and leaves is mainly carried out in flowering period, and gradually transits to reproductive growth period and vegetative growth period.

3. During this period, the height of plants will increase and the leaves will continue to get bigger. When the fruit reaches the size of walnut, it means that it will enter the fruiting period from the flowering and fruit-setting period.

Fourth, the result

1. The period from 1 inflorescence to all fruits being picked is the fruiting period. The time required for fruiting depends on many factors, such as planting varieties, planting methods and environmental conditions. When the conditions are suitable, long-season cultivation can make the fruiting period reach 9 months, even more than 12 months.

2. Because the lower fruit consumes too much nutrients, it often happens that the upper stems of plants become thinner and the upper inflorescences are underdeveloped during this period.

3. At this stage, the growth of stems and leaves and the simultaneous flowering and fruiting are transformed into flowering and fruiting, and the plants mainly perform reproductive growth, and reproductive growth and vegetative growth coexist.