What are the benefits of vegetable rotation?

1, and make full use of the nutrients in the soil. Different varieties of vegetables need different fertilizers to grow, and the absorption and quantity of nutrients in the soil are also different. For example, leafy vegetables need more nitrogen fertilizer, Guo Lei needs more phosphorus fertilizer and root vegetables need more potassium fertilizer. Rotation can make full use of nutrients in soil, reduce fertilization and pollution.

2. In addition, the distribution range and depth of roots of different vegetables in the soil are different, and the nutrient levels absorbed are also different. If a vegetable is planted on the same land for a long time, the distribution range and depth of roots are the same, and the nutrients absorbed are the same. It will occur because of long-term consumption, destroying the balance of soil nutrients. Therefore, deep-rooted vegetables and shallow-rooted vegetables can be rotated, which can make full use of different nutrients in the soil.

3. Balance soil pH value. Different vegetables have different effects on soil pH value. For example, the acidity of soil planted with potatoes and cabbages will increase, while the acidity of soil planted with corn and pumpkin will decrease. Therefore, reasonable crop rotation can play a major role in balancing soil pH, and if similar vegetables are continuously planted, it will cause serious yield reduction.

4, reduce the harm of pests and diseases. Vegetables in the same family have the same diseases and pests. If vegetables of the same family are planted continuously, the survival time of pathogens in the soil will be prolonged, and the accumulation of pathogens will increase, which will easily lead to the changes of microorganisms in the soil, especially the continuous accumulation of soil-borne diseases, which will lead to the accumulation and spread of pests and diseases and increase the probability of vegetables being harmed by pests and diseases. By rotating different vegetables, the living conditions of pests and diseases are changed, so that germs lose their hosts or change their living environment, so as to reduce or eliminate pests and diseases.