根区局部灌溉水肥一体化对糯玉米产量和水分利用效率的影响  

Effects of partial root-zone irrigation on yield and water use efficiency of sticky maize under the integrated management of water and fertilizer

作　　者：梁海玲[1] 吴祥颖[1] 农梦玲[1] 李伏生[1] 

机构地区：[1]广西大学农学院,广西南宁530005

出　　处：《干旱地区农业研究》2012年第5期109-114,122,共7页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金重点项目(U1033004);国家自然科学基金(50869001);国家863计划(2011AA1005A4);广西农业科学院科技发展基金项目(2010010)

摘　　要：为了寻找适宜的水肥供应模式,通过盆栽试验,研究了根区局部灌溉水肥一体化对糯玉米干物质积累、产量和水分利用的影响。试验灌水方式设常规灌溉(CI),分根区交替灌溉(APRI)和固定部分根区灌溉(FPRI),施肥设100%常规施肥(F1)、100%水肥一体化施肥(F2)和80%水肥一体化施肥(F3)。结果表明,与CI处理相比,APRI处理玉米总干质量减少,耗水量显著降低,因而以干物质为基础的水分利用效率多数提高。CI和APRI处理时,与F1相比,全生育期水肥一体化玉米总干质量增加,干籽粒产量增加,因而WUEs和单位肥料水分利用效率(WUEu)提高。因此在本试验条件下,分根区交替灌溉和80%水肥一体化施肥组合是一个比较适宜的水肥供应模式。In order to investigate an efficient model of water and fertilizer supply, a pot experiment was conducted to study the effects of partial root-zone irrigation on dry mass accumulation, yield and water use of sticky maize under the integrated management of water and fertilizer. Three irrigation methods were designed in the experiment, i.e. conven- tional irrigation （CI）, alternate partial root-zone irrigation （APRI） and fixed partial root-zone irrigation （FPRI）, and three fertilization treatments, i.e. 100% conventional fertilization （Fl）, 100% fertilization with integrated management of water and fertilizer （F2） and 80% fertilization with integrated management of water and fertilizer （F3）. The results showed that compared to CI, APRI decreased total dry mass of sticky maize and water consumption sigriificantly, thus in- creased water use efficiency of sticky maize on the basis of total dry mass, Compared to F1, total dry mass and dry seed yield of sticky maize were increased under the integrated management of water and fertilizer over whole growth stages at CI and APRI, thus WUEs and WUEu were also increased. Therefore, 80 % fertilization with integrated management of water and fertilizer is an efficient model of water and fertilizer supply for sticky maize under APRI in this study.

关 键 词：糯玉米 根区局部灌溉 水肥一体化 产量 水分利用效率 

分 类 号：S275.3[农业科学—农业水土工程]