~(15)N测定甘蔗生物固氮能力研究Estimation of Biological Nitrogen Fixation Capactity by Sugarcane Using ~(15)N
杨荣仲;谭裕模;桂意云;谭芳;李杨瑞;
摘要(Abstract)：
[目的]揭示来自巴西的甘蔗固氮品种在广西生态条件下的生物固氮能力,为国内甘蔗生物固氮研究和推广应用提供依据。[方法]以甘蔗脱毒茎苗为对照,温室施用15N同位素肥料而不施其他氮肥,通过15N同位素稀释法测定3个甘蔗品种的生物固氮能力。[结果]来自巴西的B8固氮百分率为26.91%,桂糖11和ROC16不具有固氮能力或固氮能力很弱。[结论]来自巴西的固氮甘蔗品种B8在广西生态条件下有一定的固氮能力。
关键词(KeyWords)： 甘蔗;生物固氮;15N同位素
基金项目(Foundation): 国家自然科学基金(30260054和30660085);; 广西农业科学院重点基金(2004002);; 广西自然科学基金(桂科基0639011)
作者(Author): 杨荣仲;谭裕模;桂意云;谭芳;李杨瑞;
Email:
DOI: 10.13989/j.cnki.0517-6611.2008.24.080
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