Do not prevent pests and diseases in fruit trees during dormancy

The fruit tree pests are concentrated in the dormant wintering sites and have the same worm age, which facilitates intensive annihilation and is the weakest period in a year. All the fruit trees are deciduous and have strong drug resistance. Spraying is easy and uniform. It saves medicine and has good results.

I. Plowing, increasing organic fertilizers, and refurbishing irrigation and drainage facilities

The depth of ploughing should not be less than 60 cm, so that soil structure can be improved, soil fertility can be increased, and the growth and development of fruit trees can be promoted, and the ability to resist pests and diseases can be enhanced. In the soil, the wintering pests are turned to the surface for freezing or drying, some are eaten by birds and natural enemies, some are crushed by the cultivator, and the weeds, fallen leaves, and diseased fruits on the soil surface can also be turned over. Into the depths of the soil, not only increase the source of fertilizer, but also reduce the source of pests and diseases. In winter, after the ploughing, the orchards mostly apply cooked organic fertilizers to help improve the soil, promote root development, and increase disease resistance and insect resistance.

Second, trim, scrape, white

Reasonable pruning can make the orchard airy and transparent, and the tree can be reasonably burdened, prevent the size of the year, and enhance the resistance to pests and diseases. During pruning, pests, branches, shoots, etc. are cut off, concentrated burned and buried deeply, and Borreaux fluid protection is applied to the pruning wounds to reduce the invasion of pathogens and breeding sites for pests and insects. In winter, scrape off rough skin, rough skin, and diseased skin lesions, and burn them together to eliminate adult spider mites, borer bugs, star caterpillars, armyworms, etc., and dry rot, rot, and ring rot in winter cracks. Such trunk diseases have better control effects.

Third, chemical control

In the later stage of dormancy of fruit trees, the tree body was sprayed once with the oil containing 4% of the oil, and then sprayed with 5 Baume degree of lime sulfur over 15 days. This can significantly reduce the incidence of fruit tree pests. For dried grass pests and other long-horned cattle, they can be diluted to 50 times with a contact pesticide to perforate the borehole.

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