%0 Journal Article
%T Effects and mechanisms of NH4+/ NO3- on Al uptake by rice<br>铵态氮/硝态氮对水稻铝吸收的影响及其机制研究
%A ZHANG Qi-ming
%A ZHAO Xue-qiang
%A CHEN Rong-fu
%A DONG Xiao-ying
%A SHEN Ren-fang
%A <br>张启明
%A 赵学强
%A 陈荣府
%A 董晓英
%A 沈仁芳
%J 土壤
%D 2011
%I 
%X In this study, two rice cultivars, Wuyunjing7 (Al-tolerant) and Yangdao6 (Al-sensitive), as experimental materials in rice hydroponic experiments were selected to investigate the effects of different N forms on Al toxicity through long-term and short-term treatment. Results showed that compared with NH4+, NO3- increased Al uptake by rice, Al content in root increased significantly with the increase of NO3- concentration but decreased significantly with the increase of NH4+ concentration. These results showed that the effects of NH4+ and NO3- on Al uptake by rice had a concentration-effect. When pH buffer was used, the difference in Al accumulation in root decreased between NH4+ and NO3- supply, which demonstrated that the difference in pH values of the NH4+ and NO3- solution may be the reason for the different Al contents of roots under NH4+ and NO3- supply.
%K Rice (Oryza sativa L
%K )
%K Al toxicity
%K pH
%K Concentration-effect<br>水稻
%K 铝毒害
%K pH
%K 浓度效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=56F69E970C6E5190CDB409D28DD0E3C6&aid=C966AF37D67DED12306E698E421C8D25&yid=9377ED8094509821&vid=BE33CC7147FEFCA4&iid=CA4FD0336C81A37A&sid=96C778EE049EE47D&eid=4AD960B5AD2D111A&journal_id=0253-9829&journal_name=土壤&referenced_num=0&reference_num=17