不同滴灌制度对棉花/马铃薯模式中马铃薯产量和WUE的影响  

Effects of Different Drip Irrigation Systems on Yield and Water Use Efficiency of Potato in Intercropping System of Cotton and Potato

作　　者：王丽霞[1] 陈源泉[1] 李超[2] 师江涛[2] 陶志强[1] 聂紫瑾[1] 张建省[1] 隋鹏[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193 [2]中国农业大学吴桥试验站,河北吴桥061800

出　　处：《作物学报》2013年第10期1864-1870,共7页Acta Agronomica Sinica

基　　金：国家公益性行业(农业)科研专项(201103001);国家科技支撑计划项目(2012BAD14B03)资助

摘　　要：为了探索华北地区棉花与马铃薯套作模式下节水高效的灌溉制度,2011—2012年,连续两年研究了不同滴灌定额(75、90、105和120 mm)对棉花/马铃薯模式中马铃薯产量及水分利用效率的影响。结果表明,马铃薯的产量与滴灌定额呈正比,且与块茎形成期和块茎膨大期的降雨、灌溉定额显著相关,2011年和2012年其相关系数分别为r=0.960(P<0.05)、r=0.998(P<0.01)。2011年,不同处理的马铃薯产量差异不显著,2012年,滴灌120 mm处理的马铃薯产量最高,达到24 921.2 kg hm–2,比滴灌75 mm处理提高了15.2%,差异显著;马铃薯的耗水量随滴灌定额的增加而增加,不同处理之间差异显著,但不同处理的马铃薯水分利用效率差异不明显。初步表明,适当增加滴灌定额、合理调整灌溉时间结构有利于马铃薯产量和水分利用效率的提高。In order to explore the efficient water-saving irrigation system for the intercropping mode of cotton and potato,the research on potato with drip irrigation in intercropping system was conducted in 2011 and 2012,and the influences of different drip irrigation norms（75 mm/90 mm/105 mm/120 mm）on the potato yield and water use efficiency were analyzed.The results showed that the potato yield was proportional to the drip irrigation norm and significantly correlated with the precipitation and irrigation quota at tuber initiation stage and tuber growth stage,with the correlation coefficient of 0.960 and 0.998 respectively in 2011 and 2012.The potato yield did not show significant differences between different treatments in 2011.The treatment with 120 mm irrigation exhibited the highest yield of 24 921.2 kg ha–1in 2012.It was 15.2% higher than that of the treatment irrigated 75 mm,with significant difference between them.The water consumption increased with the irrigation quota increasing,showing significant differences among different treatments.But the water use efficiency showed no significant differences.The research preliminarily indicated that increasing drip irrigation norm in potato and adjusting the irrigation structure rationally are beneficial to improving yield and water use efficiency.

关 键 词：滴灌 马铃薯 产量 水分利用效率 

分 类 号：S532[农业科学—作物学]