In order to prevent the occurrence of premature aging, greenhouse vegetable should enter into the later stage of growth, and should effectively grasp the following management measures: 1. Properly adjust the temperature and promote growth. When the outside temperature rises, the vegetable farmer should pay more attention to the change of the temperature inside the shed after the pull down, timely ventilation, adjust the temperature of the greenhouse, and promote plant growth. Taking cucumber as an example, the daytime temperature should be controlled at 28°C-33°C, and the night temperature should be maintained at 15°C-18°C. 2. Supplemental nutrition promotes root growth. After the temperature is raised, the growth of vegetables is accelerated and the top-dressing of vegetable growers begins to increase. This reminds farmers to avoid the application of common compound fertilizers during this period, so as to avoid causing root damage. Instead, they should use top-grade water-soluble fertilizers and bio-fertilizers as the main ingredients. , Nutrition supplements also maintain the root system. At the same time, foliar spraying 600 times cytokinin, love more than 6000 times mixed with full nutrition foliar fertilizer, can play a role in supplementing leaf nutrition, prevent leaf aging, increase the photosynthetic rate, increase photosynthetic product accumulation, Promote rooting and prevent premature aging. 3 pay attention to control the number of fruit. Due to the current high prices of vegetables, many vegetable farmers have blindly increased the number of fruit left. For example, cucumbers leave forty-five melons per plant and want to increase production and increase efficiency. However, excess melons will inevitably lead to excessive nutrient consumption in reproductive growth, less nutrients in roots, and slow growth. The ability to absorb nutrients and moisture will not be improved. Only the plumes will fall and yield will not increase. Prone to premature aging. Therefore, it is recommended that vegetable growers keep fruit properly, first increase plant growth, and then start to keep more fruits. 4. Control pests and diseases. Early spraying prevention, but pay attention to spraying must be scientific and reasonable, should not spray too frequently, the concentration is too high, so as not to cause injury, increase premature aging of vegetables. The diseases frequently occurring on eggplant vegetables mainly include early blight of tomatoes, late blight, and leaf mold, as well as the diseases of pepper vegetables, bacterial leaf spot, etc. It is necessary to pay attention to early prevention and control and control the spread of the disease as early as possible. When the disease starts, the early blight can be controlled with 58% metalaxyl manganese zinc spray 600 times, 72.2% of the Prophylactic 600 times spray can be used for late blight and epidemic disease, 47% can be used for leaf mildew and bacterial leaf spot. Garrinong spray control. Succulent Plants,Sedum Morganianum,Fishbone Cactus,Cotyledon Tomentose fanhua nursery , https://www.fanhuanursery.com