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叶对氮素吸收利用的变化规律。结果表明:节水灌溉水稻叶的含氮量在营养生长阶段高于淹灌处理的,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叶在营养生长阶段对氮素的吸收利用和生殖生长阶段向产量器官的转移。
A experiment was carried out in large-scale lysimeter in order to investigate the variation of water-saving irrigation improving the absorption and utilization of nitrogen on leaves of paddy rice in different growth stages. The results showed that the nitrogen content of leaves 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 reproductive growth stage. It was 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 productive organs in the reproductive growth stage.
出处
《现代农业科技》
2009年第24期15-16,18,共3页
Modern Agricultural Science and Technology
关键词
节水灌溉
水稻
叶干物质量
含氮量
water-saving irrigation
paddy rice
oven-dry weight of leaves
nitrogen content
