How to treat soil-borne diseases of peach trees?

Peach tree is a kind of plant that can not only produce delicious fruit but also appreciate flowers. It is planted in many areas of our country, and there are many varieties, but it is easy to suffer from diseases in the process of growth, so how to treat peach soil-borne diseases?

I. the growth habits of peach trees

Peach is a small deciduous tree of Rosaceae and peach genera, which usually blossoms in early spring and the fruit ripening period varies with varieties, usually from August to September.

The main economic cultivation areas are North and East China provinces, such as Beijing Haidian District, Pinggu County, Tianjin Ji County, Shandong Mengyin, Feicheng, Yidu, Qingdao, Henan Shangshui, Kaifeng and so on.

Peach orchards can not be continuous cropping, otherwise the growth of young trees is obviously weak, the leaves lose green, the new roots turn brown and bifurcate, and the branches flow gum.

The main reason is that the residual roots of previous cropping decompose in the soil to produce toxic substances such as benzaldehyde and cyanic acid, which inhibit and poison the roots, and are also related to the proliferation and accumulation of nematodes in the soil during continuous cropping.

Second, how to treat peach soil-borne diseases?

The soil-borne diseases of peach trees include peach root cancer disease, peach root-knot nematode disease and so on.

The prevention and control methods of peach root cancer disease are as follows: cultivating high-quality seedlings, disinfecting seedlings and treating the disease.

Among them, the seedlings were disinfected by soaking the roots with K84 biological pesticide 30-50 times for 3-5 minutes or sodium hypochlorite solution for 3 minutes or 1% copper sulfate solution for 5 minutes, and then immersed in 2% lime solution for 2 minutes.

Tumor treatment refers to ploughing out the roots near the trunk, scraping the nodules and disinfecting them with 0.2% mercury water, and then coating the wound with 5 times the lime water to protect the wound. It can also replace the surrounding soil, apply more organic fertilizer, and enhance the tree potential.

The control methods of peach root-knot nematode disease are as follows: selecting disease-resistant rootstocks, stuffing the shed at high temperature before planting, and sterilizing with insecticides.

In general, nematodes can be killed when the soil temperature reaches 55 ℃. The agent can be filled with 1.8% avermectin EC 5000 times, dig a ring ditch around the crown, and then cover it with plastic film.