Five methods of controlling vegetable pests

Vegetables are indispensable to our daily life, so vegetable farmers should know how to control the occurrence of insect pests during planting. Here are five points

First, control leek maggots. The effective ingredient of chlorpyrifos was 160 grams, diluted with water and drenched evenly on the rhizome of leek at the initial symptom of leek (leaf tip yellow soft, lodging); 400 grams of diazinon effective ingredient, mixing the granules at the beginning of symptoms of leek, mixing and sprinkling, watering thoroughly after application to ensure the efficacy. The effective components of chlorpheniramine and phoxim are 30g and 480g, respectively. At the beginning of the symptoms of leek, dilute the water and pour it evenly on the root and stem of leek.

Second, control vegetable Bemisia Tabaci. The recommended dose of imidacloprid is 2 g active ingredient / mu, and that of bifenthrin is 0.75 g / mu. Spray at the beginning of the outbreak of Bemisia Tabaci.

Acetamiprid, active ingredient 2.5 g / mu (e.g. 3% acetamiprid EC 83 ml / mu); thiazide, active ingredient 4 g / mu (e.g. 25% thiazide water dispersible granule 16 g / mu). Spray in the initial stage of the nymph.

Third, control the diamondback moth. Methylaminoavermectin, recommended dose is 0.15-0.25 g active ingredient / mu; fipronil, recommended dose is 1-2 g active ingredient / mu; fipronil, recommended dose is 3.35-5 g active ingredient / mu; indenyl, recommended dose is 3 g active ingredient / mu Fipronil, active ingredient 5-6 g / mu (for example, 10% fipronil suspension 50-60 g / mu), spray once to 50 liters of water; fipronil, active ingredient 3 g. Spray from the peak hatching period of Plutella xylostella eggs to the 2nd instar larvae.

Chlorpyrifos, effective ingredient 24 grams (4 grams chlorpyrifos 20 grams), fluorodiamide, active ingredient 3 grams, at the beginning of the epidemic period of beet armyworm, most of the larvae were sprayed evenly when they were under the 2nd instar.

Fourth, control vegetable aphids. Imidacloprid, recommended dose is 1-2 g active ingredient / mu; acetamiprid, recommended dosage is 0.45-0.6 g active ingredient / mu; pyrethroid, active ingredient 5 g; pyrethrin, active ingredient 1.8 g; matrine, active ingredient 0.4 g; chlorothioline, 2 g. Spray during the initial outbreak of aphids.

Fifth, control beet armyworm. The recommended dose of chlorfenapyr is 5 g / mu, furan hydrazide is 6 g / mu, indenyl is 2.4 g / mu, fipronil is 2.5-3.5 g / mu (for example, 5% chlorpyrifos EC 50-70 ml / mu), chlorpyrifos effective ingredient is 20-24 g / mu (for example, 40% chlorpyrifos EC 50-60 ml / mu) Methylaminoavermectin, active ingredient 0.3-0.5 g / mu (for example, 1% methylaminoavermectin EC 30-40 ml / mu), spray 50 kg of water once. It is suggested that the beet armyworm should be sprayed in the low instar stage (before the 2nd instar larva).