【摘要】 为明确洱海稻田水分管理模式，在洱海古生村开展大田试验，设置控制灌溉（控灌，C）和当地常规灌溉（常灌，CK）2种灌水模式，分生育阶段观测水稻的生理生长指标和水量平衡要素。研究结果表明：与常灌相比，控灌水稻的分蘖数、株高、干物质、产量分别提高了12.0%、4.0%、32.0%、4.8%，水稻腾发量、田间渗漏量、灌溉用水量分别减少了10.8%、37.8%、48.0%，灌溉用水效率提高了1.81 kg/m~3。综上，在洱海流域采用控灌模式可改善当地水稻的生物学性状，在保证水稻不减产的前提下，可减少洱海的灌溉用水量和污水排放量，对洱海流域水资源保护具有重要意义。更多还原

【Abstract】 In order to clarify the water management mode of rice fields in Erhai Lake, a field experiment was conducted in Gusheng Village, Erhai Lake. Controlled irrigation(C) and conventional irrigation(CK) methods were set up, and physiological growth indicators and water balance elements of rice were observed at different stages of growth. The results showed that compared with conventional irrigation, controlled irrigation increased the tiller number, plant height, dry matter and yield of rice by 12.0%, 4.0%, 32.0% and 4.8% respectively. It also reduced rice transpiration, field leakage and irrigation water usage by 10.8%, 37.8% and 48.0% respectively. Overall, the irrigation water use efficiency increased by 1.81 kg/m~3. In conclusion,adopting controlled irrigation methods in the Erhai Lake basin can improve the biological characteristics of local rice crops.It can reduce irrigation water usage and sewage discharge from the lake while ensuring rice production, which is of great significance for water resource protection in Erhai Lake Basin.更多还原