摘要
针对宁夏干旱风沙草原区紫花苜蓿地下滴灌灌溉制度、水肥协同效应不明确的问题。通过田间试验,对不同水肥组合下地下滴灌紫花苜蓿株高、土壤水分、产量及水分生产效率等指标进行综合分析,结果表明,处理D11条件下地下滴灌紫花苜蓿生长状况较好。研究提出了宁夏干旱风沙草原区苜蓿地下滴灌水肥耦合灌溉制度为:灌溉定额为3150m3/hm^2,灌水次数为12次,施肥量N为90kg/hm^2、P2O5为126kg/hm^2、K2O为108kg/hm^2。
Aiming at the problems of subsurface drip irrigation schedule and unclear synergies of water and fertilizer of alfalfa in drought sand savanes of Ningxia, through field experiment, the indexes of alfalfa, including the plant height, soil moisture content, yield and water production efficiency etc., were analyzed. The results showed that the growth of alfalfa under D11 treatment was good. According to the research, the irrigation schedule of coupling subsurface drip irrigation and fertilization for alfalfa in drought sand savanes of Ningxia is as follows: the irrigation quota is 3 150 m^3/hm^2, the irrigation times are 12 times, and the fertilizer rates are N 90 kg/hm^2, P2O5 126 kg/hm2, and K2O 108 kg/hm^2.
作者
周乾
徐利岗
杜建民
刘燕茹
ZHOU Qian;XU Li gang;DU Jian min;LIU Yan ru(Ningxia Institute of Water Resources Research, Yinchuan 750021, China;Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan 750002, China;Agricultural Comprehensive Development Office of Ningxia Hui Autonomous Region, Yinchuan 750002, China)
出处
《节水灌溉》
北大核心
2019年第7期21-25,31,共6页
Water Saving Irrigation
基金
国家重点研发计划项目(2016YFC0400305,2016YFC0400302,2016YFC0400307)
宁夏重点研发计划项目(2017BY082)
宁夏人才项目(KJT2016005)
关键词
干旱风沙草原区
紫花苜蓿
地下滴灌
灌溉制度
水肥耦合
Drought Sand Savanes
alfalfa
subsurface drip irrigation
irrigation schedule
coupling effects of water and fertilizer
