Chinese cabbage roots clever prevention

The field identifies the onset of seedlings, the base of the stem is immersed in water, rotted roots, lodging, and star-shaped fall. In the case of adult disease, the outer leaves become wilted during the day, recover at night, and then gradually die from the outer leaves. The roots turn brown and rot. The roots shrink in the middle and the lower part disappears, leaving only the upper part.

One of the main points of prevention and control is to choose topography or dry cultivation. The second is to avoid continuous cropping of cruciferous vegetables. Third, the best place to change the live broadcast for transplanting nursery. Fourth, prevent flooding after flooding and irrigation and after rain. Fifth, in the early onset of the disease prevention and treatment with a timely manner, can be used 72% Kelu 1000 times, or 72.2% Prec 800 times, or 15% hymexazol 400 times Irrigation roots, or spray plant stem base and surrounding soil.

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