The Chinese cabbage is always rotten, and there are two main diseases that cause Chinese cabbage to rot. One is wilting disease and the other is soft rot. The treatment of these two diseases is actually very simple. Spraying pesticides can prevent and cure. The trick to spraying pesticides. Symptoms of wilt disease and pesticide control methods: The onset of wilting disease begins from the 6th to 7th leaf stage, and its symptoms are that the color of the leaves from the bottom to the top becomes light, dull, and the water is wilted, and the whole plant will continue to wilting rapidly until death. The roots of the diseased plants are short and few, and they are watery and rot. When the disease is serious, they are easy to pull up, cross-short and shorten the stem base, and the cut surface is light brown rot, no foul smell. This symptom is different from soft rot. At the beginning of the onset of wilt disease, 75% of chlorothalonil WP 600 times solution, or 60% of anti-virus WP WP 500 times, or 72.2% of Plex water 600-800 times solution can be sprayed. The spraying time is 7 to 10 days, and even spraying 2 to 3 times. For the seriously ill plot, 69% of Anke Mn-Zn wettable powder 900 times solution can be used for irrigation, and each plant is filled with 75-100 ml. Symptoms of soft rot and pesticide control methods: The onset of soft rot is mostly in the period of the nucleus. The semi-transparent infiltrating plaque appears at the base of the basal lobe. It gradually enlarges and turns white. The young tissue is watery and rot, and the old tissue loses water and shrinks. In the early stage of the disease, the outer leaves are wilting, and the morning and evening rainy days can still return to normal. As the condition worsens, the outer leaves collapse, causing the leaf balls to be exposed, and then become brown sticky and soft rot. Dip-dyeing develops from the base of the blade to the shortened stem, causing the root marrow to rot and overflowing with the grayish-smelly odor until the whole plant rots. First, timely control of aphids, cabbage caterpillars, diamondback moths and underground pests. Second, in the early stage of the disease, 72% of agricultural streptomycin is used in 3000-4000 times of liquid foliar spray. The spraying is focused on the diseased plants and surrounding plants, and attention is paid to spraying the petiole and stem base close to the ground. Pine 700 times liquid irrigation roots. The small Main Controller of LED application system has the function of
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