Underground pests are a group of pests that live in the soil during the endangerment period. They are mainly crickets, earthworms, ground tigers, and golden needles. There are many kinds of pests of this type, which endanger the broadness of the host, and not only endanger vegetables, but also harm flowers, wheat, corn, sorghum, lawns, tobacco, and fruit tree seedlings. They mainly feed the seeds, roots, stems, roots, tubers, seedlings, young leaves and growing points of crops, often resulting in seedlings, ridges, or poor seedling growth. The effective control of underground pests is as follows: 40% methylisothiphos EC 50ml plus 50-60kg, mixed with wheat, corn, sorghum, and peanut seed 500-600kg, evenly sprayed, spread out Allow to sow after opening. The effective period is 30-35 days, which can control the underground pests such as cockroaches, cockroaches, yellow ants and golden worms. One month before deep-frozen in winter, deep plowing of the soil is 35 centimeters, and as the ploughs are picked up, plowing can destroy the living and overwintering environment of pests and reduce the density of insects the following year. After cleaning the pastoral crops, the weeds are picked in time to reduce spawning and concealment of pests. Pre-emergence of seedlings or seedlings of 1-2 instars of ground tigers, timely weeding of field weeds and reduction of early larval foodstuffs. Weed or transported weeds outside the field to eliminate spawning hosts. When the roots are irrigated at the seedling stage, 90% crystals of trichlorfon 800 times, 50% diazinon agrochemical 500 times, or 50% phoxim EC 500 times can be used. 8 - 10 times a day irrigation, continuous irrigation 2 - 3 times. In the field where the density of underground pests is high, 40% methylisoflunomide 50-75g, water 50-75kg can be used, and irrigation at the root of the seedlings starts at 4pm, killing the ground tiger with a 90% effect. Above, it is also possible to use the scorpion and the golden worm. Sprinkle poisonous soil with 5% Tetraphosphorus 37.5-45 kg per hectare, and the ditch and acupoints can be applied. The period of efficacy is as long as 60-90 days. Or per hectare with 50% phoxim EC 1.5 kg, mixed with fine sand or 375-450 kg of fine soil, in the crop root ditch drenched into the soil, then cover the soil, or combined with the land to be applied to the soil, can be controlled A variety of underground pests. Irrigation water in areas with good water conditions, timely irrigation after the occurrence of ground tigers, can receive unexpected results. Trap adult (1) black light trap. Adults such as chafers, tigers, and earthworms have a strong tendency toward black light. According to the actual situation in different places, under the possible conditions, some black light lamps are placed on the adult stage to trap and kill. (2) Placing sweet and sour sauces can kill the adult tigers. (3) Induction and killing of earthworms with sauteed wheat bran and bean cake. Usually in the evening without rain, digging pits in the field, put poison baits, early the next morning to pack pests to be treated centrally. (4) Poison bait trapping. Fresh grass or vegetables were chopped and sprinkled on 100 kg of grass with 50% phoxim 100 g of water and 2.5 kg of water. In the evening, the fields were divided into small piles and placed in the field to lure the tigers. Fresh poplar twigs about 1m long were soaked in a 40% omethoate solution diluted 50-fold. After 10 hours, they were taken out. After inserting spring-sown planting crops in the evening, 150-200 sticks per hectare were used to trap and kill the beetles. Put 2.5 kg of new rapeseed cake into thin pieces, put the saute in the pan, put the fried rapeseed cake in the bucket, then pour the trichlorfon into a bucket with warm water, stuffy for 3 to 5 minutes, In the evening, the bait was divided into several small portions and distributed in the field of transplanting cotton fields. The poisonous dead tiger beetle body was seen early in the morning. Ground application of the enemy killed as a new rule of law for conventional pesticides tiger. The practice is to use a backpack sprayer at the end of the evening and use 30 barrels of clean water per hectare. Add 2.5% of the enemy to kill 8 ml of water in a bucket of water and make up to 2,000 times the liquid. Stir well and spray it all over the floor. As night fell, the temperature dropped, the amount of evaporation was small, and with dew covered, the soil and seedling trees became wet and ensured their efficacy. When all kinds of tiger larvae damage the seedlings, they are encountering the drug. Gastric poisoning, heavy smoking, and contact with a few arrows are all effective. The efficacy of the tiger larvae can be fully utilized. All tiger larvae are poisoned, achieving a pest control effect of 100%. This disinfestation technique is used in a variety of crop lands for dryland crops and has good results. 90% Trichlorfon 800-1000 times, 50% phoxim EC 1000-1500 times, 50% diazinon EC 1000-1500 times, one of the above agents, adult Spray 2 to 3 times during the occurrence period and spray once every 7 to 10 days, all have better control effect.
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