Maize spot, leaf spot, and round spot disease, collectively referred to as corn leaf spot, are prone to occur in the middle and late stages of corn growth, and often have a certain impact on the yield of corn. Late and severe field crops can cause loss of production. The prevention and treatment of good corn leaf spot disease is the key to high yield and good harvest of corn, and it should attract the attention of corn growers. The corn filling stage is a critical period for chemical control. The medicines with good control effects are: 500 times 50% wettable enzmetralin, 800 times 50% wettable fungicidal, 500 times wettable carbendazim, 500 times 70% thiophanate-methyl, 500 times liquid 65% Sensen Zinc, 75% chlorothalonil 500 times, 50% Daizen ring 500 times. Normally, the first spraying is started before tasseling and sprayed once every 7-10 days for a total of 2-3 sprays. In addition, the application of 50% of 0.5% of the enemy-fertilizer smoke agent per acre was investigated 21 days after the application of the pesticide. There was still an 80% control effect on the disease, and local trials were available. Applying 15 grams per acre without iodine-promoting spirit, using hot water to dissolve, mixing chlormequat, adding 75 kg of water spray, not only stimulate stimulation, but also have obvious control effect on corn leaf spot.
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