The main pests of vegetables are earthworms, black earthworms, earthworms, seed flies, and golden needles. These pests endanger the underground parts of vegetables and often cause root damage, dead seedlings, and even lack of seedlings. Most of the underground pests have a relatively stable ecological environment, long life cycle, weak migration, and also have the characteristics of vertical activity with changes in the ground temperature, forming a peak of harm in the spring and autumn. If the environmental factors change or the human disturbance occurs, the population density will naturally decrease. Therefore, in the comprehensive prevention and control strategy, it should be based on agricultural control measures to make its ecological environment worse, supplemented by chemical prevention and other measures.
1, intensive cultivation. Deep-turning and more hoeing, applying fully cooked manure, cake fertilizer, can reduce the harm of a variety of underground pests.
2, science watering. Timely watering can control the pests of fly maggots, wireworms and other pests, especially in the heavy land where seed flies occur. After spring watering sowing, the soil should be covered immediately without exposing the manure and wet soil to avoid attracting adults to spawn. When the garlic "bad mother", should be pouring water.
3, chemical control. Soil treatment Prior to vegetable sowing, 1/15 hectare (1 acre) can be used 50% of phoxim EC 100-200 grams, or 80% of dichlorvos EC 100 grams, formulated as slag granules 15-20 kg, sprinkled on the surface , and immediately work hard.
4, drug seed dressing. In the more serious damage to the seed fly, 40% diazinon EC can be used, and the seed amount is 0.4%-0.5% for seed dressing. The control effect is good.
5, bait trapping. In the land that is dominated by earthworms, poisonous baits can be used for killing. The specific method is to fry the peanut cake or wheat bran with 80% trichlorfon wettable powder or 50% phoxim, 1 kg trichlorfon or phoxim per 100 kg peanut cake or wheat bran Add 10 kg of water and mix it to form a bait. In the vegetable seedling stage, spread it on the ground in the evening, and use 15 to 25 kg for every 1/15 ha. Tiger larvae also have a good trapping effect. In the case where the ground tiger has a heavier land mass, 10 times of the above-mentioned one kind of pesticide can be sprayed and mixed in the fresh grass or fresh leaves of the crushed pests to make poisonous grass (poisonous vegetables) in the evening ( In order to prevent the fresh grass from drying out quickly, it is divided into small piles and applied to the fields. Each 1/15 hectare uses 15-20 kg. The next morning, the dead insects are picked to prevent their revival.
6, spray / dusting. The fly can be sprayed with 80% dichlorvos 800-1000 times, or 2.5% deltamethrin EC 3000 times on onions, garlic vegetables, and field manure heaps during the adult emergence season. To kill adults, reduce spawning and larval populations.
7, watering. In the heavy-duty plots of garlic, leeks and flies, larvae were applied during the critical period of larval emergence. 90% trichlorfon crystal 300-500 times or 50% dimethoate 1000 times. When the leek is transplanted, use 50% phoxim EC 1000 times dip.
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