NITROGEN-FIXATION IN PADDY SOILS .3. N2 FIXATION AND ITS ACTIVE-SITES IN SOIL AND RHIZOSPHERE

被引：3

作者：

PANICHSAKPATANA, S

WADA, H

KIMURA, M

TAKAI, Y

机构：

[1] The University of Tokyo, Tokyo

来源：

SOIL SCIENCE AND PLANT NUTRITION | 1979年 / 25卷 / 02期

关键词：

Accumulative fixed n[!sub]2[!/sub; Active-site of n[!sub]2[!/sub]fixation; Amount of rice root;

D O I：

10.1080/00380768.1979.10433157

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Several important features of the N. fixation in paddy fields which were reported previously were confirmed and some new additional results regarding the evaluation of the N2fixation in the rhizosphere were obtained by reinvestigation in the fields. In addition, rice plants were cultivated in the submerged soil in pots and various parts of the soil were analyzed for the N2-fixing activity as well as several other properties. The results of the pot experiments were found to be fairly similar to those observed in the field investigations, indicating the validity of the submerged soil in a pot as a rather simulated model for the actual paddy field. By using this model system, the following facts were ascertained: (1) Water-percolation had almost no effect on the N2-fixing activities of both the rhizosphere and the non-rhizosphere soils. (2) Suppressing effect of washing the root of rice plant on the N2-fixing activity was slight in the seedling stage and marked in the tillering and flowering stages. (3) The N2-fixing activity of a single rice root varied from tip to base. © 1979 Taylor & Francis Group, LLC.

引用

页码：165 / 171

页数：7

共 6 条

[1]

KIMURA M, 1977, SOC SCI SOIL MANURE, V23, P39

[2]

MATSUGUCHI T, 1978, SOC SCI SOIL MANURE, V24, P46

[3] NITROGEN-FIXATION IN PADDY SOILS .2. MODEL EXPERIMENT FOR PADDY SOIL [J].