There are two common cases of Chinese cabbage rotten heart. One is soft rot, which usually occurs when the cabbage is still relatively warm, and the cabbage is harmed by insects and spreads soft rot bacteria. The rotten part is wet and sticky. There is also a so-called rotten heart, which is dry, and even rotten to the inside during the storage period. This kind of bad heart is also called "dry heartburn" disease. It is caused by calcium deficiency in plants. Generally, due to the long squatting period, lack of water in the core period, and lack of calcium in the soil, it is a saline-alkali soil. Too much nitrogen fertilizer is applied, and the variety has a high demand for calcium. You are in Hebei, and the bad heart that is happening now may be "dry heartburn."
How to prevent Chinese cabbage rotten heart
â‘ Select disease-resistant varieties. In general, the straight type and the Qinggang type are more resistant to disease.
â‘¡ Plow the land early and apply decomposed organic fertilizer. Use small high ridge cultivation, sowing in the right time.
â‘¢Drain water in time after rain, and coordinate the management of fertilizer and water to avoid excessive and excessive soil moisture. Do not flood with flood during the heart-packing period.
â‘£ Eliminate all kinds of pests that cause wounds as early as possible. Such as yellow striped beetle, cabbage caterpillar, diamondback moth, ape leaf insect, diming and cabbage army moth.
⑤ Eliminate diseased plants in time. Severely diseased plants found in the field should be harvested or uprooted in time to reduce the source of the disease and prevent spread. Especially before heavy rain or irrigation, check and deal with it. After removing diseased plants, spray lime water in the hole for sterilization.
â‘¥ Chemical control. Spraying can be used to prevent the spread of the disease before or at the beginning of the disease. Spraying should focus on lightly diseased plants and surrounding plants, and pay attention to the petioles and stem bases close to the ground.
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