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水稻蓄雨控灌技术具有良好的节水高产,减排省工效应,适用于南方多雨地区。与现有淹灌模式相比,节水21%~47%,灌水次数约减少3次,排水定额减少40%以上,氮磷负荷减少40%以上。本研究将水稻节水灌溉与面源污染控制相结合,提出了蓄雨控灌的理念及其技术模式,具有节水省工、环境友好的优点。阐明了水稻蓄雨控灌的高产、节水、减排、省工效应及其影响机制,并综合产量、品质和节水效果、环境效
The technology of rainwater storage and irrigation control of rice has good water-saving and high-yielding and emission-reducing labor-saving effects, and is suitable for rainy areas in the south. Compared with the existing submerged irrigation modes, the water saving is 21% -47%, the number of irrigation is reduced by about 3 times, the drainage quota is reduced by more than 40%, and the nitrogen and phosphorus load is reduced by more than 40%. In this study, we combined the water-saving irrigation of rice with the control of non-point source pollution, and put forward the concept of storage-saving irrigation and its technical mode, which has the advantages of saving water and saving labor and being environment-friendly. Clarified the high yield, water saving, emission reduction, labor-saving effect and its influencing mechanism of rainwater-control irrigation in paddy, combined with the comprehensive yield, quality and water-saving effect, environmental effect