In recent years, more and more attention has been paid to pests and diseases of corn. How can we effectively prevent and treat corn diseases and insect pests? Should start from the following points. (1) Seed and seed treatment of soil: 1 Seed treatment: Pests with heavy hazards from the ground pests are immersed with 0.1% of seed weight with 40% phoxim EC. In the recurrence area of ​​the head smut, 2% tebuconazole can be used as a seed dressing and 0.3% of the seed weight can be used as a seed dressing. Alternatively, seeds containing the above-mentioned drug coating may be directly used. 2 Soil treatment: 3% of Chlorophos granules are used in the re-emergence area of ​​the underground pests before sowing, 2 kg per mu, 40-50 kg for fine soil, and applied to the ditch with shallow ploughing before sowing, or with plowing Applied to soil to prevent the harm of underground pests. (2) Prevention and control of corn mash: In corn leaf stage, use 1.5% phoxim granules, 1-2 kg per acre, add 5 times fine soil or fine river sand and mix into the bell mouth; During the hiccup period, 2.5% deltamethrin EC was used per acre to drip filigree at 1000 times to prevent and control the second generation corn cocoon. (3) Prevention and control of corn big and small spot disease: 70% of the diseased plants in the field before and after corn picking, and when the leaves reach 20%, 50% carbendazim wettable powder 500 times per acre, 70% thiophanate-methyl Wettable powder 500-800 times, 75% chlorothalonil wettable powder 800 times, spray control, interval 7 days, even spray 2-3 times. (4) Prevention and control of corn red spider: Red spiders can be used in light-haired areas, and can use 3% of agar phosphate granules for 1.5 kilograms, or use 55% of 3911 eucalypts, 1 kilogram of fine sand or sawdust for 20 kilograms, and evenly apply to Prevention of fumigation between corn rows. Red spiders in the re-emergence area and spring-striped corn fields were sprayed with two spray guns with a motorized sprayer. For the re-emergence of the corn field in contiguous sections, two lines were used to control 12 lines in order to facilitate field spraying operations. Can choose to use 1.8%, or 20% of eucalyptus EC, or 5% nisoli EC 2000 times spray control, re-departure after 7 days as the weather conditions and then the second spraying. Where conditions permit, an acaricide may be mixed with diesel in a ratio of 1:1, and smoke may be sprayed with a smoke machine in the morning or evening when the pressure is low. Http://
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