March is the first critical period for the prevention and treatment of wheat diseases and insect pests in our province. The major pests and diseases occurring are wheat sheath blight, wheat spiders, and seedling locusts. In particular, wheat sheath blight, which focuses on the above areas, such as ineffective control, will seriously affect wheat production.
In the onset of wheat sheath blight, lesions extend to stems and stems, and the first and second basal parts of the stem become black to rot, leading to plant death. In the late growth stage of wheat, plants with severe stem disease often fail to produce spikes to form "dry booting spikes", or although the ear can be extracted, dry grains are rarely seen in the grains to form "dry white spikes." Basal lesions at the base of the stem. The occurrence of wheat sheath blight in Hebei Province in the year mainly occurred in the high-yield cultivation wheat area with sufficient fertilizer and water, and the northern Huaibei area and the recurrent area along the Huaihe River. The annual rate of wheat sheath blight disease in these wheat areas can reach as high as 20-40%. Under natural circumstances, the incidence of disease-causing wheat generally decreases by 5-10%. In severe disease years, the diseased plant rate and yield loss will be even higher. Wheat sheath blight has become an important disease affecting the stability of wheat yield in the province. In addition, the current poor growth and drought-heavy wheat fields, wheat spiders and seedling locusts will also become factors affecting wheat production. In order to prevent and cure wheat sheath blight in time, and to do the concurrent work of wheat spiders and wheat seedlings, we hereby put forward the following technical advice on prevention and control:
Control objects: focus on sheath blight, concurrent treatment of some wheat wheat spiders and seedling stage aphids.
Control indicators: 20% of sheath blight strains; wheat spiders 200 heads/city foot line length; 500 seedlings/100 strains.
Control agent: control of sheath blight, use 12.5% ​​of the well wax bud water agent (Streptomycetaceae) 150 ml per mu, or 12.5% ​​of diniconazole (Huoguo Li) wettable powder 50 g, or 20% Jinggangmycin can Wet powder 50 grams; control wheat spiders, use 10.2% afforestation cream 30ml per mu, or 15% carbendazim (Basben) EC 30ml; control seedling mites, with 24% anti-acridimidine per acre 20 grams or 10% imidacloprid wettable powder 20 grams.
A sufficient amount of uniform spray: motorized sprayer watering 15 kilograms per mu, manual sprayer watering 30-40 kilograms, select the application of dew in the morning, increase the amount of water, so that the liquid can flow to the base of the wheat plant. Severe area of ​​wheat sharp eyespot spray was sprayed once every 10 days.
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Wuxi Kanghe Medical Consulting Co., Ltd. , https://www.jskanghe.com