摘要
在三江平原宝清县三江试验站进行了试验,研究了不同灌溉模式下水稻在发育过程中的需水规律及水稻的水分利用效率。结果表明,拔节孕穗期和抽穗开花期是水稻全生育期中需水强度最大的时期;控制灌溉节水效果最好,且水稻灌溉水分利用效率最大,但其产量最低;湿润灌溉水稻产量最高,其水稻水分利用效率也最大,其水稻灌溉水分利用效率仅次于控制灌溉;淹灌产量高于控制灌溉但灌溉水分利用效率最小。应综合考虑产量效益和水分利用效率,选择合适的灌溉模式,以期为三江平原灌溉模式的选择提供参考。
The experiment is carried out in the Sanjiang station of Baoqing county in Sanjiang plain to study the water consumption law and water using efficiency of paddy under different irrigation mode. The results show that the panicle stage and the flowering stage are the stages in which the water demand amount is the most in the total growth stages; the water-saving effect of controlled irrigation is the best, and its irrigation water use efficiency is the biggest, but its yield is the lowest; the yield of paddy rice under wetness irrigation is the highest, its water-using efficiency is the highest, and its irrigation water-using efficiency of paddy rice is only second to that of controlled irrigation; the yield of paddy rice under traditional control is higher than that of controlled irrigation, but its irrigation water-using efficiency of paddy rice is the lowest. The suitable irrigation mode should be selected through synthetically considering the total benefit of yield and water-using efficiency to provide the references for the selection of irrigation mode in Sanjiang plain.
出处
《节水灌溉》
北大核心
2009年第11期12-14,共3页
Water Saving Irrigation
基金
国家科技支撑计划(2007BAD88B01)
黑龙江省重点攻关计划(GB06B106)
东北农业大学创新团队计划(CXZ009)
关键词
三江平原
不同灌溉模式
需水规律
水分利用效率
Sanjiang Plain
different irrigation mode
water consumption law
water using efficiency
