Wheat sheath blight control technology
I. Selection of mid-resistance and disease-resistant varieties
At present, there is a lack of wheat varieties with high resistance to sheath blight in the current production. In the fall season, varieties with medium resistance, disease resistance, or mild disease and high yield are selected as far as possible.
Second, rational rotation, strengthen field management
Implementation of wheat and rapeseed, soybean, peanut and other crop rotation, to reduce the accumulation of field bacteria. Appropriately reduce the sowing rate, control plant density, and enhance the permeability of wheat fields. Appropriate application of organic fertilizer, balanced application of nitrogen, phosphorus, potassium fertilizer, close planting, timely weeding and drainage, improve the ecological environment of wheat, cultivate strong seedlings, improve disease resistance and compensation.
Third, chemical prevention
1, drug seed dressing. The current application effect is better with 20% triadimefon EC, 25% triadimefon wettable powder, 15% oxytetrazin wettable powder, 12.5% ​​diniconazole suspension, 3% tebuconazole wet mix, etc. The dosage of the agent is 0.02-0.03% of the dry seed amount. 5.5% Soaking Spirit No. 2 Emulsion, 1 g wet mix for every 100 kg of seeds; or 23% Baosui Water Emulsion, 20 g wet mix for every 100 kg of seeds.
2, spray. For plots with a spring wheat disease strain rate of 20%, spraying should be promptly applied. The spraying time should be in the early stage of jointing of wheat to prevent diseases from invading the stem. Spray can be used in one of the following: 20% triadimefon EC 50ml, 15% or 25% triadimefon Wettable powder 75g or 100g, 15% Triadimefon WP 75-100g , 25% diniconazole wettable powder 50-60 grams or 12.5% ​​diniconazole suspension 100 ml and so on. Http://
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