欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2005, Vol. 16 ›› Issue (6): 1056-1060.

• 研究论文 • 上一篇    下一篇

硒肥对豆科牧草圆叶决明生长和植株养分含量及其固氮能力的影响

翁伯琦1, 黄东风2, 熊德中3, 应朝阳1, 黄毅斌1, 罗涛2   

  1. 1. 福建省农业科学院生态农业研究中心, 福州 350013;
    2. 福建省农业科学院土壤肥料研究所, 福州 350013;
    3. 福建农林大学资源与环境学院, 福州 350002
  • 收稿日期:2004-03-18 修回日期:2005-02-21 出版日期:2005-06-15 发布日期:2005-06-15
  • 通讯作者: 翁伯琦,男,1957年生,研究员,硕士生导师.主要从事土壤肥料与生态农业技术研究,发表论文60余篇.Tel:0591-87884600;E-mail:boqiweng@yahoo.com.cn
  • 基金资助:
    国家农业部"948"项目(990043)和福建省科学技术厅重点资助项目(2003-44).

Effects of selenium on Chamaecrista rotundifolia growth,nutrient absorption and nitrogen-fixing ability

WENG Boqi1, HUANG Dongfeng2, XIONG Dezhong3, YING Zhaoyang1, HUANG Yibin1, Luo Tao 2   

  1. 1. Research Center of Ecological Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    2. Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    3. Department of Resource and Environment, Fujian University of Agriculture and Forest, Fuzhou 350002, China
  • Received:2004-03-18 Revised:2005-02-21 Online:2005-06-15 Published:2005-06-15

摘要: 通过田间小区试验,研究了施用不同量硒肥对种植于南方红壤的圆叶决明植株生长、牧草品质和根瘤固氮能力的影响.结果表明,1hm2施用硒肥75g(S1)、150g(S2)、225g(S3)、300g(S4)处理的圆叶决明植株株高、分枝数、根干重和茎叶干重分别比不施硒肥的对照(S0)处理提高0.3%~6.2%、65.1%~79.5%、155%~252%和23.5%~70.6%,其中以S2处理最佳.施用4种水平硒肥处理(S1~S4)的植株全氮、全磷和全钾吸收量分别比对照(S0)处理提高21.79%~41.46%、20.74%~34.67%和34.3%~62.4%;而圆叶决明植株粗蛋白、粗脂肪、粗纤维和氨基酸含量则分别比对照(S0)处理提高了21.79%~41.46%、1.4%~89.6%、34.1%~56.6%和6.33%~63.24%,其中以S2处理对提高圆叶决明植株营养成分含量的效果最为明显.S4处理的圆叶决明植株体硒含量最高,达0.695mg·kg-1,比不施硒肥的S0处理提高了0.658mg·kg-1.在S2处理中,圆叶决明的根瘤重、根瘤数和根瘤固氮酶活性均呈现为最大值,分别比对照(S0)提高了131.7%、114.3%和1417.9%.

关键词: 硒, 圆叶决明, 植株生长, 养分含量, 固氮能力

Abstract: In this paper,a field experiment was conducted on a red soil of South China to study the effects of applying selenium fertilizer on the growth,forage quality and nitrogen-fixing ability of Chamaecrista rotundifolia. The results showed that applying 75,150,225 and 300 g Se·hm-2 could increase the plant height,branch number,dry root weight and dry forage yield by 0.3%~6.2%,65.1%~79.5%,155%~252% and 30.6%~54.1%,respectively. The total nitrogen,total phosphorus and total potassium contents of plant were increased by 21.79%~41.46%,20.74%~34.67% and 34.3%~62.4%,respectively,and the raw protein,raw fat,raw fiber and amino acid contents were increased by 21.79%~41.46%,1.4%~89.6%,34.1%~56.6% and 6.33%~63.24%,respectively. Among the 4 doses,150 g Se·hm-2 was the most effective and suitable application amount. The selenium content in plant after applying 300 g Se·hm-2(S4) was 0.695 mg·kg-1,with an increase of 0.658 mg·kg-1 compared to no selenium fertilization. There was a significantly positive correlation between plant selenium content and applied selenium (R2=0.9666**). The root nodule weight,number and nitrogenase activity in treatment 150 g Se·hm-2(S2) were respectively 131.7%,114.3% and 1 417.9% higher than those of no selenium fertilization. The correlation between applied selenium and nitrogenase activity was also significant (R2=0.9606*).

Key words: Selenium, Chamaecrista rotundifolia, Growth, Nutrient content, Nitrogen-fixing ability

中图分类号: