%0 Journal Article
%T Effect of exogenous selenium on soybean yield and its total N and P contents and on soil enzyme activities<br>外源硒对大豆产量、植株氮磷含量及土壤酶活性的影响
%A DONG Guanghui
%A CHEN Lijun
%A WU Zhijie
%A XIAO Shisheng
%A CHEN Li
%A LEI Enchun
%A <br>董广辉
%A 陈利军
%A 武志杰
%A 肖世盛
%A 陈利
%A 雷恩春
%J 应用生态学报
%D 2003
%I 
%X Based on pot experiment with black soil, the effects of various concentrations and various valence of exogenous selenium on soybean yield and its N and P contents and on soil enzyme activities were studied. The results showed that applying 0.25 microgram.g-1 soil and 0.5 microgram.g-1 soil of both Se4+ and Se6+ could increase soybean yield and its N content and promote soil urease activity, but decrease the P content of soybean and soil phosphatase activity. When the concentration of Se6+ was 0.5 microgram.g-1 soil, there was a significantly parabola relationship between the N content of soybean and soil urease activity; and when the concentration of Se6+ was 0.25 microgram.g-1 soil, there was a significantly parabola relationship between the P content of soybean and soil phosphatase activity. There were no significant relationships between the N and P contents of soybean and the activities of test soil enzymes when Se4+ was applied.
%K Exogenous selenium
%K Soil enzyme activity
%K Soybean<br>外源硒
%K 土壤酶活性
%K 大豆
%K 氮磷含量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=66D4CE058F6C4E01&yid=D43C4A19B2EE3C0A&vid=F3583C8E78166B9E&iid=94C357A881DFC066&sid=FE17D37BFC90FA6B&eid=5E191A234CD3698F&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=12&reference_num=24