干旱地区农业研究Issue(4)：78-84,7.
集雨节灌种植技术对春玉米光合特性及产量的影响
Effects of rainfall harvesting planting combined with water-saving irrigation on photosynthetic characteristics and yield of spring corn
摘要
Abstract
Taking spring corn ( Zea mays L .) as the tested material ,and the traditional irrigation methods (furrow and border irrigation ) as the control ,a field test was conducted to determine the effects of rainfall harvesting planting combined with water-saving irrigation (RHWI ) on chlorophyll relative content (SPAD ) , photosynthetic parameters in functional leaves and grain yield of spring corn .The results showed that ,among the treatments with same irrigation time , the net photosynthetic rate ( Pn ) , transpiration rate ( Tr ) and stomatal conductance ( Gs ) of RHWI were increased by 10 .57% ~16 .15% ,4 .10% ~9 .24% and 15 .38% ~33 .33% ,respectively ,compared with those of furrow irriga-tion;they were increased by 11 .31% ~26 .19% ,5 .73% ~13 .56% and 22 .73% ~47 .37% ,respectively ,compared with those of border irrigation ;and they were increased by -0 .12% ~26 .19% ,0 .16% ~9 .95% and -4 .35% ~25 .00% ,respectively ,compared with those of rainfall harvesting planting (PRH ) .There was no significant difference for the chlorophyll relative content (SPAD) and instantaneous water use efficiency(WUE) between RHWI and furrow ir-rigation ,border irrigation as well as PRH .Compared with furrow irrigation ,border irrigation and PRH ,the yield of RHWI was increased by 15 .45% ( P<0 .05 ) ,21 .85% ( P<0 .05 ) and 3 .28% ,respectively ,and the water use effi-ciency (WUEY ) of RHWI was increased by 39 .82% ( P<0 .05) ,53 .13% ( P<0 .05) and 4 .44% ,respectively ,un-der the condition of irrigating 1 time at pre-sowing stage ;the yield was increased by 7 .06% ,18 .42% ( P<0 .05 ) and 2 .32% ,respectively ,and the water use efficiency ( WUEY ) was increased by 28 .41% ( P<0 .05 ) ,39 .58% ( P<0 .05 ) and 5 .09% ,respectively ,under the condition of irrigating 1 time at flowering stage ;the yield was increased by 5 .03% ,14 .57% ( P< 0 .05 ) and 5 .72% , respectively , and the water use efficiency ( WUEY ) was increased by 40 .23% ( P<0 .05) ,54 .70% ( P<0 .05) and 2 .99% ,respectively ,under the condition of irrigating 1 time at pre-sowing stage and 1 time at flowering stage . It was concluded that RHWI could improve the leaf photosynthetic perfor-mance ,and significantly promote the grain yield of corn under the condition of less irrigation volume .关键词
春玉米/集雨节灌/光合特性/相对叶绿素含量/产量Key words
spring corn/rainfall harvesting planting combined with water-saving irrigation/photosynthetic charac-teristics/chlorophyll relative content/yield分类
农业科技引用本文复制引用
陈馨,邴昊阳,张艳,吴杨,贾志宽,任小龙,张鹏..集雨节灌种植技术对春玉米光合特性及产量的影响[J].干旱地区农业研究,2014,(4):78-84,7.基金项目
“十二五”国家科技支撑计划课题（2012AD0903、2011AD2909）；国家863课题（2013AA102902、2011AA100504）；公益性行业专项（201303104）；陕西科技创新项目（2011NXC01-16）；国家自然科学基金青年项目（31201156）；西北农林科技大学基本科研业务费 （）
