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Integrated control technology of vegetable root knot nematode

...... With the expansion of vegetable cultivation area in protected areas, affected by factors such as high temperature, high humidity, closure and flail cultivation, vegetable root-knot nematode disease has been increasing year by year, and has risen to become an important disease in vegetable production, generally reducing production by 20%- 30%, the heavy ones are more than 50%, and even the end. I. Symptoms of the disease The root-knot nematode is mainly harmful to the roots of the plants. After the roots are damaged, the plants are poorly developed, the lateral roots are increased, and the spherical or conical tumors of different sizes are formed in the roots, sometimes stringed. The nodules are initially white, soft in texture, then turned brown to dark brown, and sometimes cracked on the surface. Anatomical root knot, the tissue of the sick part is a small milky white nematode. The root knot can generally grow a weak new root, causing the host to become infected again and form a root knot. The symptoms of the upper part of the ground are different due to the severity of the disease. The symptoms of the mild disease are not obvious, the severe diseased plants are poorly developed, the plants are short, yellow, wilting, affecting the melons, and the melons are mostly deformed. When the disease is serious, the whole plant(View original)
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