%0 Journal Article
%T Balance of Boron in Farmland Ecosystem in Calcareous Alluvial Soil of Jianghan Plain in Hubei Province<br>江汉平原农田生态系统B素循环及平衡分析
%A LIN Kuang-Fei
%A <br>林匡飞
%J 生态学报
%D 2002
%I 
%X There is certain threshold value of boron for a plant, below which a deficiency symptom will develop, and above which toxicity symptoms appear. A special attention is paid to boron among the essential mineral nutrients because the range between deficiency and excess is narrow. The proper boron input is closely related to the long-term stability of agro-ecosystems. From this perspective, the study on the input, output, cycling and balance of boron plays an important role in determining and optimizing the pro...
%K Jianhan plain
%K farmland ecosystem
%K boron
%K input and output
%K balance<br>江汉平原
%K 农田生态系统
%K B素循环
%K 平衡分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=6D3B94A356C8E648&yid=C3ACC247184A22C1&vid=BC12EA701C895178&iid=E158A972A605785F&sid=F3A3627BFEF439C1&eid=F3549E0657848E2A&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=20