First, prevent vegetable aphids. Imidacloprid, the recommended dosage is 1-2g of active ingredient per mu; acetamiprid, recommended dosage is 0.45-0.6g active ingredient per mu; pymetrozine, active ingredient is 5g; pyrethrin, effective ingredient is 1.8g; bitter Alkaloids, 0.4 g of active ingredient; chlorothione, 2 g of active ingredient. Sprayed at the beginning of the locust period.
Second, the prevention and control of vegetables, tobacco meal. For imidacloprid, the recommended dosage is 2 g active ingredient/mu; for bifenthrin, the recommended dosage is 0.75 g active ingredient/mu. Sprayed at the beginning of the development of the Bemisia tabaci.
Acetamiprid, active ingredient 2.5g/mu (eg 3% acetamiprid EC: 83ml/mu); Thiamethoxam, active ingredient 4g/mu (eg 25% thiamethoxam water dispersible granules 16g/mu) . The spray was applied at the onset of nymphs.
Third, control Spodoptera exigua. Bromide, recommended dosage is 5 g active ingredient/mu; furanilate hydrazone, recommended dosage is 6 g active ingredient/mu; indoxacarb, recommended dosage is 2.4 g active ingredient/mu; hexaflumuron is effective Composition 2.5-3.5 g/mu (eg 5% fluvoluril 50-70 ml/mu); chlorpyrifos active ingredient 20-24 g/mu (eg 40% chlorpyrifos EC 50-60 ml/mu); methylamino Vermectin, active ingredient 0.3-0.5 g/mu (eg 1% emamectin emulectin 30-40 ml/mu), spray once on water 50 kg. It is recommended that the beet armyworm be sprayed at a low age (before the larval 2nd instar).
Tebufenozide + chlorpyrifos, active ingredient 24 grams (4 grams of tebufenozide + chlorpyrifos 20 grams); flubendiamide, 3 grams of active ingredient, at the peak of Spodoptera exigua, most of the larvae are evenly under 2 years of age spray.
Fourth, control of diamondback moth. Emamectin is recommended at a dose of 0.15-0.25 g active ingredient per mu; fipronil is recommended at a dose of 1-2 g active ingredient per mu; chlorfenapide, a recommended dose of 3.35-5 g is effective Ingredient/acre; indoxacarb, recommended dosage is 3 g active ingredient/mu; chlorfenapyr, active ingredient 5-6 g/mu (eg 10% chlorfenuron suspension 50-60 g/mu), water 50 liters spray once; flubendiamide, active ingredient 3g. It was sprayed on eggs of hatchback moth hatching to 2nd instar larval stage.
Fifth, prevention and control. The effective component of chlorpyrifos is 160 grams, which is when the early symptoms of leek (soft yellow tips, lodging), is diluted with water, and is evenly poured on the roots of leek; the effective ingredient of diaziphos is 400 grams, and the granules will be given when the leek initial symptoms appear. Mixed soil, spread after mixing, irrigating after application, in order to ensure efficacy. 30 mg of ciprofloxacin active ingredient and 480 g of active ingredient phoxim. When the early symptoms of the leek were diluted with water, the lecithin was uniformly poured on the root of the leek.
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