Generally speaking, the flower buds of spring tomatoes are more differentiated, the inflorescences are denser, there are more fruits, and the fruit expands faster (and the fruits in the lower layer are obviously larger than those in the upper layer). The inflorescence that sets fruit first has stronger competition ability for nutrients, and premature aging is manifested by shorter plants, less lateral branches, thinner stems, smaller leaves, and some leaves look yellow and have tumor-like protrusions. Of course, the flowering and fruiting will be carried out in advance, and of course the fruit will be small. However, with the continuous improvement of cultivation techniques and the introduction of fine varieties, the planting area has been expanding, and various planting problems have also appeared. Among them, the premature senescence of tomato plants has a great influence on the yield and quality of tomatoes, which greatly reduces the income of vegetable farmers.

Under normal circumstances, the root system of tomato is very large, and it must be very large, so as to increase the ability to absorb nutrients, ensure normal flowering and fruiting in the later stage, and meet the normal nutrient consumption of tomato plants. If the root system does not grow well, tomatoes are prone to various diseases. If the fertilizer and water management is improper, tomatoes are prone to produce adventitious roots and have a strong ability to absorb fertilizer and water. In the production process, in order to prevent tomato seedlings from being raised in vain, some choose to squat seedlings to make tomato seedlings thicker and become good seedlings with high quality. However, if the premature senescence of tomato seedlings is excessively inhibited, it is generally caused by improper fertilization according to the video method.

Tomato is a multi-inflorescence, multi-bearing crop, and the inflorescence growth time is not equal, which leads to the consistency of flowers and fruits in the whole tomato tree, and the flowers and fruits grow at the same time. However, it is precisely because tomatoes bear many fruits that they are also a great burden to plants. Continuous planting without stubble simply means that plants, like animals, need to breathe and absorb the nutrients they need, and at the same time need to secrete some substances. Without crop rotation, the concentration in the discharge field increased and normal respiration was inhibited.