Inhibitory effects of acidic minesoil on the sericea Lespedeza/Bradyrhizobium symbiotic relationship
Inhibitory effects of acidic minesoil on the sericea Lespedeza/Bradyrhizobium symbiotic relationship
复制标题
酸性矿土对绢毛胡枝子/慢生根瘤菌共生关系的抑制作用
DOI：
10.1080/01904169309364657
复制
发表时间：
1993
影响因子：
2.1
通讯作者：
Z. Senwo
中科院分区：
文献类型：
--
作者：
G. Cline;Z. Senwo
摘要研究了酸性矿砂对胡枝子(lespedeza juncea （L.F.) var. sericea (Mig.)）的影响及其与慢生根瘤菌的固氮共生关系。分别在施氮、不施氮和用商业缓生根瘤菌作为种子接种剂的盆栽中生长。用钙（Ca）、磷(P)、钼（Mo）和钾(K)对pH为5.2的矿砂进行施肥，用硫酸铝或硫酸铁[Al2(SO4)3]将pH调节到4.8或4.5；价(SO4) 3]。Minesoil也被限制在pH值6.1。在pH为4.5和4.8的土壤中接种植株的地上部干重、地上部氮浓度、根瘤干重和根瘤数显著低于石灰土（P < 0.05）。因此，pH低于5.0时，N2固定过程受到不利影响。施氮植株在酸化土壤中生长良好，在土壤酸化处理中，施氮植株的地上部干重无显著差异。
Abstract Effects of acidic minesoil on sericea lespedeza [Lespedeza juncea (L.F.) var. sericea (Mig.)] and its nitrogen (N2)‐fixing symbiotic relationship with Bradyrhizobium spp. were examined. Sericea lespedeza was grown in pots with N fertilization, without N fertilization, or with commercial Bradyrhizobium as a seed inoculant. Minesoil (pH 5.2) was fertilized with calcium (Ca), phosphorus (P), molybdenum (Mo), and potassium (K), and the pH level was adjusted to 4.8 or 4.5 with aluminum or iron sulfate [Al2(SO4)3; Fe2(SO4)3]. Minesoil was also limed to pH 6.1. Shoot dry weights, shoot N concentrations, nodule dry weights, and nodule numbers were significantly lower (P < 0.05) when inoculated plants were grown in soil at pH 4.5 and 4.8 compared to limed soil. Thus, the N2 fixation process was adversely affected below pH 5.0. Nitrogen‐fertilized plants grew well in acidified soil, and there were no significant differences in shoot dry weights of such plants among the soil acidification treatments includi...