Experimental studies and production practices have shown that pest control in winter is not only low in cost, but also often results in a multiplier effect.
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1, clean the garden Some pests often lurking in the debris of the host plant leaves (fruit) in the winter, the crop after the harvest to clean the pastoral, often can eliminate a large number of overwintering pests.
2. Winter plowing Winter plowing Through deep plowing in winter, the original living environment of 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 excavated. Suffocation, thus reducing the source of overwintering; winter irrigation followed by cultivation, not only can sink, weathering the soil, but also some frozen overwintering pests.
3. Eradication of weeds Some pests are often transferred to the fields and weeds in the surrounding areas after they are harvested. By early spring, these weeds are often used as “refuges†and wild hosts for wintering pests; relevant experts have been Investigations on the weeds surrounding the cotton fields have revealed that 8 to 15 of the overwintering tigers are found on every square meter of land, and the red spider on the host of weeds in early spring has a total of 1194 insects (eggs). 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.
4. Treat some host pests (such as corn borer, etc.) after the crop is harvested, often hidden in winter in the stem or cob of the host crop; in winter or early spring, use the stem or cob of these host crops as fuel, feed , Fertilizers and other methods are all dealt with, which can greatly reduce the overwintering base of pests.