节水灌溉对水稻茎生长状况的影响  

Effect of Water-saving Irrigation on Rice Stem in Typical Lowland Rice Conditions in China

作　　者：刘晗[1] 

机构地区：[1]菏泽学院园林工程系,山东菏泽274015

出　　处：《安徽农学通报》2009年第23期43-44,206,共3页Anhui Agricultural Science Bulletin

基　　金：国际合作课题的一部分;课题的题目:More rice with less water。经费来源是澳大利亚;合作单位是国际水科学院;国际水稻研究所;武汉大学;华中农业大学

摘　　要：在大型蒸渗仪中,研究了不同水肥处理下不同生育期水稻茎对氮素吸收利用方面的变化规律。结果显示,节水灌溉水稻茎的含氮量在营养生长阶段高于淹灌的,而生殖生长阶段则与淹灌处理差别不大。表明节水灌溉有利于水稻茎在营养生长阶段对氮素的吸收利用和生殖生长阶段向叶片和产量器官的转移。A experiment was carried out in the lysimeter in order to investigate the effects of water - saving irrigation on stems of paddy rice. Results showed that water - saving irrigation could improve the absorbability and utilization of nitrogen by rice, amt it was demonstrated by that the nitrogen content of sterns in the vegetative growth stage was higher under the water saving - irrigation than under the flooding irrigation, and there were few differences between two irrigation methods in the re- productive growth stage. It indicated that water saving irrigation benefits the absorption and utilization of nitrogen by rice in the vegetative growth stage and the transfer of nutrient to the leaf and the productive organs in the reproductive growth stage.

关 键 词：节水灌溉 水稻 含氮量 茎干物质量 

分 类 号：S511[农业科学—作物学]