The reasons for the small size of tomatoes and the slow rate of expansion are the following: 1. Poor fertility, insufficient organic matter content, and poor sand and land conservation capacity. Experts found that many of the sheds were sand lands, which had poor water retention and fertilizer retention capacity. The amount of organic fertilizer should be increased and soil improved. However, vegetable farmers are obviously lacking in base fertilizer application. In addition, some vegetable farmers only reckon fertilizer compound fertilizer, but they do not know that the utilization rate of such fertilizers is not high, nutrient content is incomplete, tomatoes "short of food and clothing," naturally difficult to grow normally. For this reason, sand land leaks and fertilizer leaks, and vegetable growers are irrationally fertilized, causing their tomatoes to grow slowly and grow small. 2, the greenhouse insulation is poor, the transmittance of the greenhouse film is low, the greenhouse temperature, humidity, light and other conditions can not meet the growth of tomatoes. Creating suitable temperature and light conditions for the growth of vegetables is the key to ensure its normal growth and development. We found in the survey that there were many drawbacks in the construction of their sheds, such as the angle of the roof after the roof was too small, the arch of the shed was small, and the grass was thin. Such facilities, poor insulation, affect the transmittance of the film, can not meet the appropriate temperature requirements for tomato growth (25 ~ 30 °C during the day, 15-18 °C at night, keep the temperature difference between day and night at 15 ~ 17 °C conducive to fruit enlargement) and light condition. 3, picking leaves too heavy, injured vine, fruit handle bent. Vegetables mainly through the leaves for photosynthesis organic products, and then transported to the fruit part, for its expansion. However, when the leaves are picked too early and too heavy, the effective photosynthetic leaves of the tomato plants are reduced, which will inevitably affect their normal growth. This type of situation is prevalent in many of their sheds, and some of the first fruits have not changed, and the picking leaves have reached the third spike. In addition, the vine vines “leaked†the stems of the tomato plants, which hinders the plant growth to some extent. In addition, we have seen that local farmers have never paid attention to the protection of the ear stems of the tomatoes, which has caused the handle to bend and hinder the transportation of nutrients. The rate of fruit enlargement naturally slows down. Frozen Mussels,Frozen Cooked Clean Mussel Meat,Cooked Mussel Meat,Seafood Mussel Meat Shengsi Huali Aquatic Products Co.,Ltd , https://www.mytilus-edulis.com