In the past, the weather was fickle and the temperature was high and low, which could easily lead to the occurrence of corn seedling blight, especially low-lying land, poor soil, heavy land on clay and gravel. If Tang, Laibin, Wenxing, Lefeng and some other townships occur to varying degrees. 1, the characteristics of the disease The pathogen of corn seedling blight is mainly Fusarium moniliforme, which occurs at the corn seedling stage. Sensitive seedlings first attacked from the roots of the seed, causing whole roots to develop poorly, with reduced root hairs, no secondary roots or few rootings. The primary root is dead after the disease and the roots turn dark brown. The upper part of the leaf sheath is lacerated with brown leaves, the edges are scorched, and the heart leaves are curled. Afterwards, the leaves gradually dry up from the bottom upwards, and no secondary root causes dead seedlings. A small number of secondary roots formed weak seedlings, and the leaves appeared fire-like to die off. The heart and leaves gradually wilted and wilted, which seriously affected the growth and development of corn. 2. Reasons for the occurrence The pathogen of corn seedling blight is a kind of weak parasite. The main reasons for this disease are as follows: (1) The varieties have poor resistance to disease, and there is a great difference in resistance to disease among different corn varieties. (2) Abnormal climate, continuous low temperature and rain is one of the important causes of seedling blight. (3) Reapplying nitrogenous fertilizers and phosphate fertilizers, neglecting the use of potash fertilizers and trace elements, resulting in imbalanced nutrient ratios, leading to poor permeability of the soil and affecting the normal growth and development of the maize root system. 3, prevention measures (1) Choose high-quality, disease-resistant varieties, and use corn seeds that are full-grown and have strong germination potential. (2) Promote formula fertilization, increase farmyard manure to cultivate strong seedlings, especially pay attention to phosphorus and potassium fertilizers. Promote root growth, make plants grow vigorously to improve disease resistance. (3) Strengthen the management of the intertillage, reduce the use of herbicides, timely smashing, and enhance soil permeability. (4) Irrigation with 1000 times carbendazim plus potassium chloride 2-3 kg. Can choose 70% thiophanate-methyl 800 times, or 20% triadimefon 1000 times, 75% chlorothalonil 1000 times and other pesticides spray 2 times (each drug interval of about 7 days). Veterinary Products,Veterinary Equipment,Veterinary Instruments,Veterinary Dental Instruments ZHEJIANG FOMOS MEDICAL TECHNOLOGY CO.,LTD. , https://www.ifomos.com