Effects of Nitrogen Level and High Temperature Stress on Yield, SPAD Value and Soluble Sugar Content of Early Rice Ganxin 203  

氮肥和高温对早稻淦鑫203产量、SPAD值及可溶性糖含量的影响（英文）

作　　者：杨军[1,2] 余秋英[1] 陈小荣[1,3] 朱昌兰[1,3] 彭小松[1,3] 贺晓鹏[1,3] 傅军如[1,3] 欧阳林娟[1,3] 边建民[1,3] 胡丽芳[1,3] 孙晓棠[1,3] 徐杰[1] 贺浩华[1,3] 

机构地区：[1]江西农业大学农学院/作物生理生态与遗传育种教育部重点实验室,江西南昌330045 [2]江西省气象局/江西省气象科学研究所,江西南昌330096 [3]南方粮油作物协同创新中心,湖南长沙410128

出　　处：《Agricultural Science & Technology》2016年第2期385-390,共6页农业科学与技术（英文版）

基　　金：Supported by Special Scientific Research Fund of Meteorological Public Welfare Profession of China(GYHY201406025;GYHY201006025);Special Fund for Agroscientific Research in the Public Interest of China(201403002);Young Talent Project of China Meteorological Administration;Jiangxi"555"Ganpo Yingcai Project~~

摘　　要：This study aimed to investigate the combined effects of nitrogen level （high and ordinary） and high temperature stress （37 ℃, 4 d） at the late panicle ini- tiation stage on yield, SPAD value and soluble sugar content of Ganxin 203, an early rice cultivar. The results showed that under both high and ordinary nitrogen levels, high temperature stress reduced the seed-setting rate, yield per stem, SPAD value and soluble sugar content of Ganxin 203; under both high and ordinary tem- peratures, high nitrogen level increased the seed-setting rate, yield per stem and soluble sugar content of Ganxin 203; the seed-setting rate, yield per stem and yield per plant of Ganxin 203 under high temperature and high nitrogen level were higher than those under high temperature and ordinary nitrogen level. It suggests that ap- propriate high nitrogen level contributes to weakening the negative effects of high temperature stress on rice yield.为探究氮肥和幼穗分化后期高温对水稻产量的综合影响,以杂交稻淦鑫203为材料,设置2个氮肥水平,于水稻幼穗分化后期37°C高温处理4 d,研究氮肥和穗分化后期高温对早稻产量、SPAD值及可溶性糖含量的影响。结果表明,高氮或是常氮下,与适温相比,高温降低了淦鑫203的结实率、单茎产量、SPAD值和可溶性糖含量。高温或适温下,与常氮相比,高氮增加了结实率、单茎产量和可溶性糖含量。高温高氮的结实率、单茎产量和单株产量高于高温常氮,说明适当增施氮肥可缓解高温的减产作用。

关 键 词：RICE Late panicle initiation stage High temperature YIELD SPAD value Nitrogen level 

分 类 号：S511.31[农业科学—作物学]