Comprehensive control technology for earthworms
I. Agricultural control 1) Reasonable rotation. Usually 3 to 4 years with other non-lilies crop rotation. 2) Clean the pastoral. After each harvest, we must promptly remove dead leaves, sick plants, and weeds in the field and concentrate deeply or burn them to reduce field pests. 3) Scientific fertilization. Leek fertilizer should be dominated by organic fertilizer supplemented by chemical fertilizer supplemented. Organic manure must be thoroughly cooked, sifted, and reused to prevent damage from radon. Fertilizers should be based on soil fertility, combined application of nitrogen, phosphorus and potassium, and appropriate trace element fertilizers, in order to promote robust growth of plants, and enhance the ability to resist pests and diseases. 4) Irrigation with water. The spring and autumn season is a period of serious damage to earthworms. When spring leeks occur in the spring and autumn, the leeches in the open season can be effectively used to kill larvae by combining irrigation with 15 to 20 kg of ammonium bicarbonate per acre. 5) Earthworm roots. When the early spring begins to grow or when the fall is close to the cover film, select the warm weather and skim the surface of the pier to expose the roots. Expose the roots to the sun and dry the soil for 5-7 days. After the furrows are applied, the cover covers the soil and can kill some of the earthworms. And can add potassium, promote the growth of leeks. 6) Prevent adults from spawning. After the leek is harvested, there is a dense leeks flavor around the vegetable field, and it is easy to attract a large number of adults to spawn. Can be applied after the leek harvested vegetation ash or covered with plastic film above the quail, to prevent adult oviposition, play a role in the elimination of maggots, after 3 to 5 days, leek wounds heal, the smell disappears, then remove the plastic film. Second, the use of sweet and sour liquid or light trapping and killing adults have a certain degree of tropism. During the adult emergence period, sugar, vinegar, wine, water, and trichlorfon are made into a solution at a ratio of 3:3:1:10:0.5, placed in pots to trap and kill adult worms and put 2 to 3 pots per acre. , can effectively reduce the number of adults in the field. Set up ordinary fluorescent lamps in greenhouses, place potted water under lamps, and trap and kill adults. Third, irrigation control 1) Irrigate with biological pesticides. During the occurrence of earthworms, per acre with 1.8% avermectin EC 30 ~ 60mL or 1.1% matrine powder 2 ~ 4kg or 25% Diflubenzuron 3 suspension 200mL water 50 ~ 60kg Irrigation, Can effectively kill larvae. 2) Irrigation with high efficiency and low toxicity chemical pesticides. In the larval stage, when the tips of the leaves begin to yellow and become soft and gradually fall to the ground, they should be treated with medication immediately. Each lore was irrigated with 48% Loessben EC 500x or 50% phoxim EC 1000x. When irrigating the roots, remove the topsoil near the roots of the leeks, remove the sprayer nozzles, and align the roots of the leeks with the ridge, then cover the soil. IV. Spraying and spraying in the peak period of adult emergence 48% of Looseben EC 2000 times or 20% Fenvalerate EC 3000 times or 2.5% Lambda-cyhalothrin EC 1500-2000 times or 20% The chlorfluacholine 2000 times solution was sprayed. The best time was between 9:00 am and 11:00 am. The soil around the leeks must also be thoroughly sprayed, which can effectively kill adult worms. The first half of the harvest of leeks was stopped before use to prevent pesticide residues.
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