Occurrence and Control Techniques of Underground Pests in Maize

Underground pests are the main pests of maize during seedling stage. The underground pests in our county are mainly maggots, golden worms, cockroaches, and floorworms. They occur in a wide area and are of a serious degree of damage, belonging to the common and disastrous groups. Underground pests mainly feed larvae on seeds, roots, seedlings, and other parts of the corn, resulting in broken seedlings, serious seed replanting, and delays in farming, resulting in reduced yields. At the same time, labor and capital are wasted and losses are great. Affect the output in different degrees. According to the symptoms of pests, crops should be diagnosed, identified, and controlled.

First, the symptoms of harm?

1. Aphid: Scarab larvae, feeding on the underground part of the roots and stems of the crop, often bite or bite off the roots. The hazard is characterized by a relatively neat fracture, which causes the seedlings to wither and die. ?

2. Goldworm: It is a larva of a beetleworm, which eats seeds, germs and rhizomes. The hazard is that the young rootstock can be eaten into small holes, resulting in dead seedlings, lack of seedlings or causing tuber rot.

3. 蝼蛄 俗 俗 蝼蛄 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 俗 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄 蛄. The seedling roots are separated from the soil, causing the seedlings to wither and die.

4. Ground tiger: also known as the cutworm, larvae are very complex food, buried in the soil during the day, the night unearthed hazards, the hazard is the crop stem base bite off, often resulting in serious crops lack of seedling broken, or even destroy the seed.

Second, control methods

The county’s current prevention measures for underground pests mainly use corn seed coating technology.

There are many corn seed coating products on the market. According to the active ingredients, the seed coating agents can be divided into two categories. One is the pesticide seed coating agent, the other is the micro fertilizer seed coating agent, and the two types of seed coating products. The agent can promote the development of corn seedlings and seedlings, but the former emphasizes the prevention and control of seedling pests during the seedling stage, improves the rate of seedling establishment, and at the same time reduces the incidence of head smut; the latter emphasizes on providing nutrients for seed and enhances seeds. Germinating potential, nurturing strong seedlings.

The effect of carbofuran in corn seed coating agent for controlling underground pests reaches about 7%, and the commonly used fungicide for preventing seedling diseases in corn is fumei double. The commonly used fungicides for controlling corn head smut are tebuconazole and alkene. In the case of oxazole alcohols, when farmers purchase seed coating agents, they must first understand the occurrence of local corn pests, determine which products to buy based on the active ingredients contained in the seed coating agents, and ensure that the seed coating agents purchased are of acceptable quality and Road, the effect is remarkable.

Remedies for damage caused by underground pests during seedling stage

(1) Irrigation with 48% or 10% phoxim 1000-fold to irrigate roots or evening stem and leaf spray;

(2) Toxic soil, bait trapping: Use 50% phoxim 50 grams per acre, stir fried 5000 grams of wheat bran, spread in the evening between the crops;

(3) Capture larvae: In the early morning, remove the wilting seedlings and the soil around the dead heart seedlings and dig out the old tigers of the ground tiger;

(4) trapping adult: black light, sweet and sour liquid to lure the adult.

When the worms are severe, they can be watered to force the pests to move vertically to the deeper layers of the soil to reduce the damage. It is also possible to plow the soil and reduce the amount of larvae that survive in the soil.

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