Sclerotinia prevention measures (1) Seedling prevention. Seed soaking in warm water at 52°C for 30 minutes. When planting seeds, use 50% carbendazim WP 8g to compost the soil and cover it with a cover. The wintering period management of the seedbeds was strengthened, and the ventilation and looseness were observed on sunny days, and low-temperature cold weather covered the insulation in a timely manner. (2) Reasonable colonization. Before planting, plunge 20 to 25 cm deep and bury sclerotia. For reasonable close-packing, the spacing is 55 to 60 cm and the spacing is 35 to 40 cm. The mulching surface covers the mulch completely, preventing the ascidian plate from unearthing. (3) Hygroscopic disease. Use drip-free membrane covering to reduce water droplets; in early spring, select sunny manure in the morning, and use it in cloudy or in the afternoon; keep a high temperature in the greenhouse in the morning, let the water be atomized, extend the ventilation time in the afternoon, cover the insulation at night, and prevent the leaves from falling. Dew condensation. (4) Irrigation root flowers. After colonization, 50% carbendazim wettable powder 1000 times was used to irrigate the roots, and 200-250 ml of each liquid was used. A suitable amount of procymidone or iprodione is added to the formulated anti-decantin or 2,4-dip. (5) Clean up the diseased plants. Timely removal of diseased plants, cutting off diseased branches, removing diseased leaves, removing diseased flowers and rotting fruit, and bringing out deep concentration outside the field; at the early stage of disease, the eggplant or the eggplant is first cleared of the diseased surface, and then the amount of disease is increased. Efflora or thiophanate-methyl is sprinkled on the wound and the fruit can continue to grow. (6) Spray control. After finding the central diseased strain, 50% procymidone WP or 50% iprodione WP can be sprayed with water, and spray and young fruit can be sprayed on every 7-10 days for 2 to 3 consecutive times. (7) Smoke agent fumigation. In case of onset of continuous rainy days, use 10% procymidone smoke agent or 45% chlorothalonil smoke agent 250-300 grams per acre. Spread evenly in the evening, close the shed and smoke overnight, once every 5-7 days, continuous Prevention 2 to 3 times. Sclerotinia is an important disease on the eggplant in the early spring in the coastal areas in recent years. It will develop from the seedling stage to the adult stage. The most serious damage is in the early stage of flowering. It often causes the phytophagous and rots on the eggplant's buds and young fruit. Main stems and branches withered and early production dropped sharply. Symptoms The onset of disease at the seedling stage begins at the base of the stem, and the diseased area appears light brown at the beginning. When the humidity is high, white cotton-like hyphae are grown, causing the eggplant seedlings to soften and die. In the adult stage, the leaves were damaged, and they were initially water-stained and brown round spots appeared. When the humidity was high, white mycelium grew; buds and flower stalks were injured, and the water-stained rot was firstly formed and then fell off; the fruit damage usually started on the fruit surface. The remaining petals are initially water-stained and yellow-brown rotten. When the humidity is high, white mycelium grows, and sclerotia are formed later; the stems are damaged, mainly occurring near the place where the eggplant stalk is placed or where the eggplant is located. On the lateral branches, mostly caused by the spread of germs on the flower or young fruit of the decapitationed flower, the diseased part was water stained and expanded upwards and downwards, slightly sunken, and it was pale grayish-yellow, the cortex rotted, and the longitudinal section of the stem showed the pith. There was a black rat sac-like nucleus and the plants withered upward from the victim's site. Onset of disease Sclerotinia sclerotiorum is a fungal disease. The sclerotia is mainly sclerotized in the soil. The sclerotium germinates after eggplant is colonized, the ascitium plate is extracted, the ascospores are distributed, and the airborne spores are transmitted to the host and invade from the wound or natural orifice. Formation of initial infection. After the diseased plant comes into contact with the healthy plant, the diseased flower or the diseased fruit falling in the soft part will cause the disease and become one of the re-infection. Continuous rain in early spring, the incidence of low temperature and high humidity in the shed. Yirun Agricultural Cooperative , https://www.yiruncn.com