Shallow roots of vegetables, short-term water will not cause greater damage to the plant, long-term water will cause serious damage to the root system, and thus affect the normal growth and development of vegetables until death. The following management measures shall be taken after the disaster occurs: When the flooded vegetable fields are flooded in time, the first thing to do is to eliminate the accumulated water in the field first, and at the same time, clean up the furrows and furrows to reduce the groundwater level so as to restore the growth of the vegetables. It is the premise of disaster prevention and flood prevention that large areas of heavy rainfall are encountered, and the digging and dredging of drainage ditches. In order to help the seedlings to retreat water and help the seedlings, the vegetable mud will be cleaned, so that the leaves as soon as possible to restore normal breathing and photosynthesis. If the backwater is too fast and waterless, it can be sprayed with a sprayer. After the flooded vegetables are poured into the water, they must be carefully centered and the soil cultivated so that the plants grow upright to improve the air and light conditions of the vegetable fields. When the water accumulated in the loose soil in the arable land, the soil tends to be hardened and the root environment is deteriorated. Therefore, after the drainage, the cultivator should be cultivated early to improve soil permeability and promote root development. The cultivator is also conducive to spreading and reducing soil moisture. Scientific recovery of fertilizers often leads to the loss of soil nutrients after drainage. Therefore, it is necessary to top-dress fertilizers to supplement soil nutrients. If vegetables are damaged lightly, fertilize them early. With the application of potash fertilizer, promote the application of special fertilizer for vegetable formulations, so as to deepen the ditch. Strengthen the comprehensive prevention and control of diseases and insect pests, rainy weather, vegetables prone to disease, it is necessary to take timely preventive measures. Biological Microscope Biological Microscope,Trinocular Thermostat Microscope,Biological Trinocular Microscope,Biological Artificial Microscope NINGBO VANCO INSTRUMENT CO.,LTD , https://www.vancoscope.com