Cabbage will encounter a variety of disease problems during the planting process. Among them, cabbage heartburn is most common during cabbage cultivation. Cabbage heartburn mainly occurs in the cabbage period of Chinese cabbage. If it is not timely controlled, the variety of Chinese cabbage and Production will be reduced, and even the situation will be lost. The following Hui Nongwang Xiaobian will tell you about the causes and prevention measures of cabbage heartburn.
Cabbage heartburn symptoms:
When the heartburn occurs, the appearance is invisible. The inner leaves are yellow and dry first. In severe cases, the inner leaves will rot and flow to the sticky liquid.
In order to prevent and cure Chinese cabbage, it is necessary to know the cause.
The following are three reasons why Xiaocai's cabbage is burned:
1. The weather is dry and fails to water in time, and the underground salt will rise, causing the absorption of calcium in cabbage to be blocked.
2. There is water in the field that has not been removed in time. The root system of cabbage is poorly developed and cannot absorb calcium in the soil.
3. Long-term use of only chemical fertilizers instead of organic fertilizers will cause soil compaction and stickiness, which is also the main cause of heart disease in Chinese cabbage.
Control method:
Variety selection
When selecting Chinese cabbage varieties, it is necessary to select varieties with high disease resistance. Generally, green cabbage has higher disease resistance than white cabbage, so in areas where heartburn occurs, you can choose green cabbage.
2. Reasonable rotation
When choosing a plot to grow cabbage, you should choose a plot that has not been planted with cruciferous vegetables for 2-3 years, and long-term heavy planting is also a major factor in the occurrence of heartburn.
3. Rational fertilization
When applying the base fertilizer before planting cabbage, it is best to choose a fully decomposed farmyard manure. The farmer's fertilizer has the advantage of improving the soil structure. If only chemical fertilizer can be applied, it is necessary to control the application of nitrogen fertilizer, and it is necessary to do a good job of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer. Apply.
4. Reasonable irrigation
Too much watering will cause the burning of cabbage, so it is necessary to properly irrigate the water according to the different growth periods of cabbage to prevent the soil from being too wet and dry.
5. Skillful application of calcium fertilizer
The occurrence of cabbage heartburn is mainly caused by the absorption of calcium in cabbage. Therefore, in the rosette period where cabbage is prone to heartburn, calcium can be supplemented by foliar application of calcium fertilizer. Calcium chloride or calcium chloride can be selected. Calcium superphosphate, sprayed once every 10 days, continuous spraying 4-5 times, can effectively reduce the incidence of heartburn.
The above is the reason and prevention measures of cabbage burning heart disease compiled by Huinong. I hope to help you.
Dental Sterilizer,Podiatry Sterilizer,Dental Sterilization,Dental Sterilization Equipment
ZHEJIANG FOMOS MEDICAL TECHNOLOGY CO.,LTD. , https://www.ifomos.com