Garlic pests are mainly root pests, root pests are pests, and are the most common and most harmful pests of garlic. There are as many as 12 species of pests that harm the roots, of which 4 species are the most serious. They are onion species, late nymphs, gray clocks, and radishes. Flies and leeks are larvae on the surface of 1-4 cm above the upper layer of fresh garlic bulb juice or larvae into the clove to smoke hazards, the formation of yellow-brown holes, further causing garlic rot, garlic smaller, garlic Cracking caused economic losses. For the biological characteristics of the root pests, the law of occurrence and development? The following methods can be used for prevention and treatment.
1. Agricultural control
(1) Improve the quality of soil preparation Before cleaning the soil, clean up the residues of garlic, onions, and sorghum in the fields, land, and roadsides, and pour in water at the bottom of the road. Combine the base fertilizer and deepen the soil 30 to 40 centimeters, and plow the soil and level the soil. Soil, lay sowing and leveling.
(2) Select garlic varieties to improve the quality of sowing, use as much as possible to choose the kind of garlic transferred from different places, use virus-free varieties; select bulk garlic, remove moldy, rotten garlic and garlic, and remove the small garlic garlic; sowing depth to 4 About centimeters is appropriate and covers loose soil.
(3) The cover film shall be carefully covered with mulching film to prevent the film from cracking to form holes; the seedling hole shall be small, loosen the soil, and cover the seedling hole at the base of garlic sprouts.
(4) Scientific fertilization Strengthen the management of fertilizer and water, and 30 to 40 kilograms of refined manure organic fertilizer can be used instead of farmyard fertilizer to purify the soil and reduce the accumulation of pathogens in the soil. Can also be used for biological compound fertilizer 80 to 100 kg.
(5) Garlic fields should be kept away from onions and squats as much as possible. When harvesting garlic, the residue should be removed as much as possible to reduce the amount of insects in the field.
2, chemical prevention
(1) Soil treatment Combined with irrigation at the end of the dredge, the bacteria line Wei water into 3500 times liquid, poured into the garlic field, covering the garlic field with a film, to suffocate overwintering larvae and cockroaches.
(2) Growth prevention
1 Use adequately decomposed organic fertilizer or spray uniformly with 800-1000 times of 90% trichlorfon during tanning, and then stack tanned. During the autumn and winter irrigation, when the insect pests are seriously damaged, spray the plants and the ground evenly with 25% ingenious 1000 times liquid. 22.5% of deltamethrin emulsifiable concentrate was irrigated 2000 times. 3 sweet and sour trapping. Use sugar, vinegar, wine, and water to add 1/10 of 90% trichlorfon to the mixture in a ratio of 3:3:1:10. Dispense the bowl in 8-10 bowls per acre. Add vinegar every other day. .
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