首页 | 本学科首页   官方微博 | 高级检索  
     

供氮形态和水分胁迫对苗期—分蘖期水稻光合与水分利用效率的影响
引用本文:周毅,郭世伟,宋娜,张崇林,李想,沈其荣. 供氮形态和水分胁迫对苗期—分蘖期水稻光合与水分利用效率的影响[J]. 植物营养与肥料学报, 2006, 12(3): 334-339. DOI: 10.11674/zwyf.2006.0308
作者姓名:周毅  郭世伟  宋娜  张崇林  李想  沈其荣
作者单位:1.南京农业大学资源与环境科学学院 江苏南京210095
摘    要:采用室内营养液培养及聚乙二醇(PEG6000)模拟水分胁迫处理的方法,在3种供氮形态(NH4+/NO3-比为100/0,50/50和0/100)和2种水分条件(非水分胁迫及水分胁迫)下,研究了水稻苗期—分蘖期的生长及其水分利用效率。结果表明,苗期—分蘖期水稻在非水分胁迫条件下,NH4+/NO3-比为50/50处理(NH4+、NO3-混合处理)的生物量最大,比单一供NH4+-N和单一供NO3--N的处理分别高49.63%和63.25%。而在水分胁迫条件下,单一供NH4+-N的处理生物量最大,比NH4+、NO3-混合处理和单一供NO3--N的处理分别高5.76%和484.0%;单一供NH4+-N其水分利用效率也最高,比NH4+、NO3-混合处理和单一供NO3--N的处理分别高11.36%和81.63%,而比非水分胁迫条件下的相应处理高12.39%。此外,单一供NH4+-N较单一供NO3--N的处理水稻有较强的抗旱性,主要与其能保持相对较高的叶绿素含量、叶面积、分蘖数和净光合速率有关。

关 键 词:水稻   供氮形态   水分胁迫   水分利用效率
文章编号:1008-505X(2006)03-0334-07
修稿时间:2005-03-31

Effects of nitrogen forms and water stress on photosynthesis and water use efficiency of rice at seeding-tillering stage
ZHOU Yi,GUO Shi-wei,SONG Na,ZHANG Chong-lin,LI Xiang,SHEN Qi-rong. Effects of nitrogen forms and water stress on photosynthesis and water use efficiency of rice at seeding-tillering stage[J]. Plant Nutrition and Fertilizer Science, 2006, 12(3): 334-339. DOI: 10.11674/zwyf.2006.0308
Authors:ZHOU Yi  GUO Shi-wei  SONG Na  ZHANG Chong-lin  LI Xiang  SHEN Qi-rong
Affiliation:1.College of Resource and Environmental Science;Nanjing Agricultural University;Nanjing 210095;China
Abstract:By using nutrient solution culture and simulated water stress by PEG(6000),the effects of different nitrogen forms(NO~-_3-N, NH~ _4-N and the mixture of NO~-_3-N and NH~ _4-N) and water statuses(non-water stress and water stress) on water use efficiency(WUE) and the biological characteristics of rice plants at seedling-tillering stage were studied.The results showed that,under non-water stress,the biomass of rice plants were about 49.63% and 63.25% higher under the supply of mixture of NO~-_3-N and NH~ _4N than either sole supply of NO~-_3-N or NH~ _4-N,respectively.However,under water stress,the biomass of rice plants were about 5.76% and 484.01% higher under sole ammonium supply than the other two treatments,WUE of rice plants were also 11.36% and 81.63% higher than the two treatments,while 12.39% higher than the same nitrogen form supply under non-water stress.Furthermore,rice plants grown with ammonium nutrition showed a stronger tolerance to water stress,due to their higher chlorophyll content,leaves area,tillers,and net photosynthetic rate et al.compared with those grown with nitrate nutrition.
Keywords:rice  nitrogen form  water stress  water use efficiency
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《植物营养与肥料学报》浏览原始摘要信息
点击此处可从《植物营养与肥料学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号