How to eliminate overwintering pests

When entering the wintering period, pests are generally lurking in a suitable environment to hibernate and will begin to harm the crops in the coming spring. Therefore, the wintering period is the weakest link in its life cycle. Grab this favorable opportunity to eliminate the disease, save labor, Provincial medicine, good effect, to reduce the harm of pests, can play a multiplier effect.

First, clean the pastoral

Some pests are often lurking in the roots, stubbles, dead branches, fallen leaves, fallen fruit, and other residues of host plants. The residues are burned, fertilized, or buried in time after the crops are harvested. This can often eliminate a large number of overwintering pests.

Second, winter plowing and winter irrigation

Winter plowing and winter irrigation are both important measures for increasing agricultural production and effective methods for eliminating overwintering pests. Through deep plowing in winter, the original living environment of the pests can be changed, and the deep-layered pests can be turned to the surface to dry, freeze to death or be eaten by natural enemies, so that the insects in the deep underground can not be normally feathered and become suffocated, thus reducing the number of pests. Overwintering the source of insects; followed by winter irrigation after cultivation, not only can sink, weathering the soil, but also frozen part of the overwintering pests.

Third, eradicate weeds

Some pests often migrate to winter in fields and surrounding weeds after the crops are harvested. By early spring, these weeds have often become “refuges” and wild hosts for the damage of overwintering pests; experts have done so on weeds. Investigations revealed that 8 to 15 wintering tigers were found per m2, and cotton red spiders had a total of 1194 hundred insects (eggs) in early spring weeds. Therefore, it is an effective measure to prevent and control overwintering pests by combining fat and fertilizer in winter and spring, eradicating weeds in and outside the fields, or spraying the weeds in early spring.

Fourth, deal with the host

Some pests (such as corn borer, etc.) often hide in the stem or cob of the host crop after harvesting; in winter or early spring, they use the stem or cob of these host crops as fuel, feed, fertilizer, etc. All treatment can greatly reduce the overwintering base of pests.

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