NaCl胁迫下氮形态对水稻幼苗营养的影响  

Effects of N Form on Nutrition of Rice Seedlings under NaCl Stress

作　　者：杜洪艳[1] 白寅[1] 柏彦超[1] 蔡树美[1] 沈淮东[1] 钱晓晴[1] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225009

出　　处：《江西农业学报》2008年第7期7-9,14,共4页Acta Agriculturae Jiangxi

基　　金：国家自然科学基金资助项目(30370816);江苏省自然科学基金资助项目(BK2002049)

摘　　要：在NaC l浓度为0、43、86 mmol/L条件下,研究了水培水稻幼苗对不同质量比例(9/1、5/5和1/9)铵态氮/硝态氮处理的响应特征。结果表明:在3种盐浓度条件下,水稻幼苗均在NH4+-N/NO3--N为1/9时生长量最少,吸收氮素最少,培养后营养液pH最高;NaC l浓度为0和86 mmol/L时,NH4+-N/NO3--N为1/9处理的植株吸磷量最少。A solution cultivation experiment, with NaCl concentration 0, 43, 86 mmol/L, was conducted under different ratios of NH4^＋ -N to NO3^- -N（9/1,5/5 and 1/9） to evaluate the effects of mixed nitrogen nutrition on growth and nutrition character of rice seedings cultivated under salt stress condition. The results obtained were as follows： the rice seedings grew the least, took up the least nitrogen and the pH - value of the solution after culture was the highest when the ratio of NH4^＋ - N to NO3^- - N was 1/9 under three salt concentration conditions. The rice seedlings in treatment of NH4^＋ - N/NO3^- - N being 1/9 took up the least phosphorus under NaCl concentration of 0 and 86 mmol/L.

关 键 词：氮形态 NACL胁迫 营养 水稻 幼苗 

分 类 号：S511.062[农业科学—作物学]