In the recent period, the rainfall in the southern area was concentrated in a relatively short period of time, resulting in serious water accumulation in some of the low-lying areas, causing considerable losses and adverse effects to the local vegetable production. In response to the specific circumstances of the disaster, disaster relief farms should take timely remedial measures:
1. Timely drainage and flood prevention, improve the field drainage system. After the flood disaster, the soil in the vegetable field is poor, and the plant roots are lack of oxygen, and the roots are prone to occur. Therefore, the drainage should be performed in time after the rain. Open-season vegetable farmers should open up all drain outlets to reduce the time for collecting water. If there is a large range of accumulated water and deeper water in greenhouses, water drainage should be taken to reduce the occurrence of vegetable roots; when the rain is raining, It will produce high-temperature and high-humidity environmental conditions, where conditions can be timely watering well water, in order to reduce the ground temperature and reduce the generation of hot and humid airflow, reduce the incidence of disease.
2. Strengthen field and fertilizer management. For vegetables subject to heavy rainfall and flooding, they should be straightened in time, washed to remove foliar sludge, remove dead yellow leaves, diseased leaves, and diseased fruits, timely cultivating, and timely application of foliar fertilizer or foliar spraying of potassium dihydrogen phosphate and other foliar fertilizers. To promote vegetable growth. Sheltered vegetables should be well ventilated. After rain, it is necessary to pay attention to proper shading. It can cover the shade net on the shed film to reduce evaporation and prevent plants from wilting due to physiological water loss.
3. Do a good job of pest control. After the rain, the humidity in the field is relatively high, and the plants are damaged due to wind and rain. The disease resistance is weakened and various vegetables pests and diseases caused by high temperature and high humidity environment should be strengthened.
4. Renovate collapsed sheds as soon as possible to prepare for the early stage of fruit and vegetable cultivation in autumn and winter. Short-time strong winds caused some of the shelters to collapse and damage. The steel frame, cement frame, and other facilities should be strengthened and repaired as soon as possible to prepare seeds, mulch, fertilizers, and other material reserves for the upcoming autumn vegetable seedlings in the region, such as tomatoes and sweet peppers. , Hami melon, cucumber and other varieties breeding time in the middle and early August, to prepare in advance to ensure the smooth development of nursery work.
5. The flooded plots will be timely grabbed and harvested. For mature vegetables, timely harvesting should be carried out to reduce losses; for vegetable lands with long flooding time, most plant deaths or serious impacts on yield, planting of heat-resistant, fast-growing leafy vegetables should be stepped up; The nursery base must be sown and replanted as soon as possible to compete for farm time to ensure the smooth production of autumn vegetables.
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