Flood damage refers to long-term heavy rain or heavy rain, which forms a large area of ​​surface runoff, flushes cane ditches, or where low-lying landforms or landforms are obstructed. The part planted in the main paddy fields contributes to water accumulation in the sugarcane fields and affects the normal growth of sugarcane. disaster. Floods occur mostly in the middle or late rainy season. After flooding occurs, the sugarcane fields are flooded for a long time, causing soil hypoxia and the lack of oxygen in the sugarcane plants. After the soil becomes anoxic, the roots are impaired and the absorption capacity is weakened, and the effective nutrient release in the soil is slow. Increased accumulation of organic acids poisons the root system. Roots and shoots of aerial parts sprouted aerial roots and lateral buds; plants were deprived of oxygen and destroyed the metabolism of above-ground parts of the plant, causing a decline in sugar cane production and sugar content, and severe plant death.
How to prevent floods:
1, selection of resistant varieties.
2. In the sugarcane field with flat terrain and high groundwater level, there must be an annular drainage ditch around the field before planting in the ditch. There must be a “cross†shape in the middle, and a “芋†or “well†shaped trunk row. Drainage or branch drains, cut off the infiltration of water sources around the ground and reduce the ground water level in the field. When the seedlings are planted, the seedlings will be planted under shallow open cane trenches in shallow soil, and the capillary water will be cut off to reduce the damage.
3. For a contiguous cane area where the terrain is low and susceptible to damage, the drainage system should be designed according to the size and topography of the area.
4. In the dry land sugarcane area, the diversion canal shall be excavated according to the topographic changes and slopes on the platform or slope. In the sugarcane areas with concentrated rain and heavy rainfall in summer and autumn, contour lines are used to excavate deep planting ditch, and wide-width planting is adopted to increase planting ridges, which is conducive to intercepting rainwater and reducing erosion.
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