The prevention of corn madness disease
Maize mad disease, also known as Phytophthora infestans, can develop throughout the growing season and is a potentially dangerous disease affecting corn production. In recent years, due to the relative concentration of seed production bases and frequent introductions, the disease has a tendency of further expansion and spread. It is hoped that farmers' friends will attach great importance to them and take scientific measures to prevent and treat them in time. First, the symptoms Typical symptoms occur after tasseling, and there are many types: all male abnormal proliferation, normal or incomplete inflorescence become abnormal lobule, leaflets clustered, distorted leaf inflorescence twisted and shrunk into a group or spikelets were mad like, like "Robinia pseudoacacia," can not produce normal male flowers; after the infection of the common female ear is also affected by infection, the appearance of the ear is more normal than normal, but the ear is thick and long, the temporal lobe shrinks and thickens, and the temporal lobe metamorphoses to the lobules and clusters at a 45 degree angle. Coarse uneven thickness, the majority of diseased plants shortened, dwarfed, ear deformity, no filigree, heavy inside the ears are all temporal lobe, spike into multiple stem-like, the whole ear was "bamboo", not strong, serious Affects corn yield and quality; the upper leaves and heart leaves are tightly coiled, severely distorted into irregular lumps or "cow tails", and the plants cannot pump out. The plants were slightly or severely dwarfed. The upper leaves were clustered, the leaf sheaths were stalk-like, the leaves were narrowed, and some of the diseased plants grew mad and were top-heavy and easily broken. Second, the incidence of the law Mammalian disease is a kind of soil-borne disease. Diseases occur when fields accumulate water due to rainfall or irrigation. Because the germs are oospore germinating in the flooding conditions to produce zoospores invade the host, rainy years and low-lying waterlogged fields are more susceptible to disease. Seeds are also an important means of transmitting diseases. The planting density of corn is too large, the ventilation and light transmission are poor, and the humidity between the plants is high and the incidence is heavy. In addition, the incidence and species are also related, usually dentate varieties resistant to disease than hard grain varieties. Third, prevention and control measures 1. Remove the diseased plant and remove it from the field in time to prevent the disease from spreading. 2. In the early stage of disease, use 60% excreted cadmium manganese WP 80-120g, evenly spray 50kg of water, or use 90% triethylaluminum phosphate wettable powder 400 times, or use 64% cacao cream Ling wettable powder 500 times spray control. Can also be used 50% Rhizoctonia 100 grams, spray control of 100 kilograms of water, or 1:1:150 Bordeaux mixture, spray once every 7 days, and even spray 2 times. 3. A twisted part can be cut with a knife to promote the heading of diseased pigs that are "cow-tailed". 4. Completely remove and destroy the diseased bodies after corn harvest, eradicate the field weed host weeds, deepen the soil, reduce the amount of bacteria in the field, to prevent the spread of pathogens in the field, and rotation, with non-grass crop rotation, select beans Class, cotton and so on. Frozen Sardine,Frozen Sardines Sardinefrozen,Frozen Sardine Fish,Sardine Whole Round Frozen Zhoushan City Shuangying Aquatic Products Co., Ltd.  , https://www.shuangying-aquatic.com