The sticky insect is a common pest in the corn planting process. If it is not controlled in time, it will lead to a reduction in corn production. How to prevent cornworms? This article will introduce a two-pronged approach to control cornworms.
Physical control
Adults can be trapped by adults to supplement their nutrition before spawning. It is easy to trap the characteristics of the eggs before they are laid, and the traps are used to eliminate the adults before laying eggs. Use the grass valley to trap and sweeten vinegar. Formulate the sweet and sour liquid, mix it with sugar 3 points, 1 part wine, 4 parts vinegar, 2 parts of water and mix thoroughly. Night lure.
Inducing eggs and collecting eggs can also take advantage of adult spawning habits to eliminate egg masses before hatching. Specific practice: From the early stage of spawning to the peak period, a small grain grass is inserted in the field, and the sweet and sour wine is sprinkled on the grass to lay eggs, and the effect is very good.
The grass inoculates the eggs from the adult to the end of the spawning period, and uses the three grasses to form a small grain grass or use straw to insert (more than ten roots) into the wheat field to induce eggs. Insert 10 seeds per acre, the top of the grass is about 15 cm higher than the wheat plant, and change it for about 5 days. The grass with the eggs will be destroyed.
2. Chemical control
Sprinkle toxic soil with 40% phoxim emulsifiable concentrate 75-100g per acre of water, mix 40-50 kg of sand with the sand in the heart of the corn, you can protect the natural enemies, but also prevent corn mash.
The bait traps 90% of the 100% trichlorfon per acre, and mixes it with 1.5 kg of sauteed bran to make a poison bait. In the evening, it is spread along the corn line to induce the trap.
In the young age of larvae, the damage is controlled in time, and the prevention time is before 8:00 in the morning and after 6 pm. The following agents can be used to control A, 5% taibao emulsifiable concentrate 4000 times solution; B, 5% card gram emulsion 4000 times solution; C, 5% Nongmeng special emulsifiable concentrate 4000 times solution; D, 20% chlorpyrifos 1 Suspension agent 500-1000 times solution; E, 25% Diflubenzuron No. 3 suspension agent 500-1000 times solution; F, 40% chrysanthemum EC 2000-3000 times solution; G, 40% chrysanthemum EC 2000-3000 times solution ; H, 20% fenvalerate 2000-4000 times solution; I, artemisinin insecticide 500 times solution; J, or use Jingong (4% high chlorine methyl salt) diluted 1000-1500 times spray, or Spray 10-20 ml / 15 kg of water; H, 4.5% beta-cypermethrin 50 ml.
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