Recently, a vegetable farmer in Xiaoxibao Village, Yongnian County, said that he planted tomatoes in greenhouses for three years. But after the transplanting of tomatoes, this year is always a dead seedling. Now he has changed the seedlings for three or four, and he will die and die. What's wrong? After field exploration, it was judged that the greenhouse tomato of the vegetable farmer had stem rot. The disease is a soil-borne disease, mainly caused by Pythium-infested plants, resulting in damaged roots and water-stained plants. The base of the stem on the surface of the soil is often light brown. The temperature difference assembly induced the occurrence of the disease. In order to allow the greenhouse tomato to grow healthily, farmers should take the following measures to prevent stem rot according to local conditions: First, the use of 600 times liquid polynin + 600 times the liquid Mei-Pai + 1000 times thiophanate-methyl spray control. Second, the use of 1500 times the liquid can kill å 1000 + 500 times liquid dew spray control. Third, use a liquid mixture of 600 times liquid root treasure and 1000 times thiophanate-methyl. 0.5 kg of potable water can be planted when planting 4-5 trees, according to the size of the seedlings can increase the amount. According to the disease condition, Irrigate the roots at intervals of 7 days after easing the seedlings. Pay attention to the wilting of plants when the temperature is high at noon in the shed. When flooding, do not flood irrigation, try to increase the temperature and the greenhouse temperature, reduce humidity, timely ventilation and light, improve lighting conditions. JIANGSU CLS TECHNOLOGY CORP.LTD , https://www.js-cls.com