Competition between grass and clover for phosphate
Competition between grass and clover for phosphate
复制标题
草和三叶草之间对磷酸盐的竞争
DOI：
10.1080/00288233.1972.10421623
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发表时间：
1972
期刊：
影响因子：
--
通讯作者：
M. Mouat
中科院分区：
文献类型：
--
作者：
R. Jackman;M. Mouat
研究了白色三叶草和褐顶草在土壤不同深度吸收磷的相对足活动、单位体积土壤的根尖数、褐顶草引起的土壤水分损失以及白色三叶草和褐顶草对施磷的响应曲线。结果表明，草和三叶草根系可直接竞争表层土壤2.5 cm处的磷。由于三叶草对施磷的反应明显低于褐顶草，这两种结果对白色三叶草的影响比褐顶草更大，这一结果在固磷能力强、易形成高水分张力的土壤中表现得最为明显。
Abstract Factors studied were the relative foot activities for P uptake by white clover and browntop at different depths in the soil,the root tip numbers per unit volume of soil,the loss of soil moisture caused by the presence of browntop, and the response curves of white clover and browntop to applied P. It was concluded that grass and clover roots can directly compete for P in the top 2.5 em of topdresscd soil,the grass can decrease the availability of P by increasing soil moisture tension, and both these results will affect white clover more adversely than browntop,because of the markedly less efficient response to applied P of clover than of browntop.This result will be most strongly expressed in soils whieh strongly fix P and easily develop high moisture tension.