摘要
为探究浅埋滴灌条件下,不同灌溉定额对春玉米生长发育的影响,开展单因素完全随机区组试验,共6个水平,727(T1)、1454(T2)、2181(T3)、2908(T4)、3635(T5)和4362(T6)m^(3)/hm^(2),并设置无灌溉(T0)和常规沟灌(CK)灌溉定额4154 m^(3)/hm^(2)为对照,共8个处理,分别重复3次,结果表明:浅埋滴灌玉米生育期叶面积指数与灌溉定额之间呈二次型抛物线关系,株高和茎粗与灌溉定额呈显著正相关关系,株高、茎粗和叶面积等指标在苗期增长缓慢且差异较小,而在抽穗吐丝期差异显著。与CK相比,生育期叶面积指数、茎粗未表现出显著降低差异,株高在抽穗期降低显著。不同灌溉定额处理成熟期干物质积累量差异较为明显,干物质积累量与灌溉定额间呈二次型抛物线关系。灌溉定额3635 m^(3)/hm^(2)时干物质积累量最大,为23808.6 kg/hm^(2),显著高于常规沟灌CK,灌溉定额为2181~2908 m^(3)/hm^(2)时干物质积累量与常规沟灌CK相当,未表现出显著差异。
In order to explore the effects of different irrigation quotas on the growth and development of spring maize under shallow drip irrigation,a single factor completely randomized block experiment was carried out at 6 levels,727(T1),1454(T2),2181(T3),2908(T4),3635(T5)and 4362(T6)m^(3)/hm^(2).The ir-rigation quota of no irrigation(T0)and conventional ditch irrigation(CK)4154 m^(3)/hm^(2)were set as the con-trol,a total of 8 treatments,The results showed that there was a quadratic parabolic relationship between leaf area index and irrigation quota during the growth period of shallow buried drip irrigation maize,and there was a significant positive correlation between plant height and stem diameter and irrigation quota.Plant height,stem diameter and leaf area increased slowly and had little difference at the seedling stage,but had significant difference at the heading and silking stage.Compared with CK,there was no significant difference in leaf area index and stem diameter at growth stage,and plant height decreased significantly at heading stage.The differ-ence of dry matter accumulation in mature stage of different irrigation quota treatments is obvious,and the re-lationship between dry matter accumulation and irrigation quota is quadratic parabola.When the irrigation quo-ta is 3635 m^(3)/hm^(2),the dry matter accumulation is the largest,which is 23808.6 kg/hm^(2),which is signifi-cantly higher than that of conventional furrow irrigation CK.When the irrigation quota is 2181~2908 m^(3)/hm^(2),the dry matter accumulation is equivalent to that of conventional furrow irrigation CK,without significant difference.
作者
谷健
孙占祥
尹光华
马宁宁
王子豪
郭金路
刘泳圻
GU Jian;SUN Zhan-xiang;YIN Guang-hua;MA Ning-ning;WANG Zi-hao;GUO Jin-lu;LIU Yong-qi(Tillage and Cultivation Research Institute,Liaoning Academy of Agricultural Science,Shenyang,Liaoning 110116;Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang,Liaoning 110016;University of Chinese Academy of Sciences,Bei-jing 100049;Shenyang Agricultural University,Shenyang,Liaoning 110016)
出处
《辽宁农业科学》
2022年第2期1-7,共7页
Liaoning Agricultural Sciences
基金
中国科学院战略性先导科技专项(XDA28090200,XDA28120100)
国家重点研发计划项目(2017YFD0300704,2018YFD0300301)
辽宁省“兴辽英才计划”青年拔尖人才项目(XLYC1907106)
辽宁省博士启动基金项目(2019-BS-259)
中国博士后基金项目(2018M641708)。
关键词
浅埋滴灌
灌溉定额
春玉米
生长状况
Shallow drip irrigation
Irrigation quota
Spring corn
Growth status
