CAJ | 학술논문

通过试验分析了生境土壤氮素异质性对于克隆植物结缕草生长的影响.结果表明,生境中土壤氮素资源的总体水平、分布格局以及二者间的相互作用均显著影响结缕草克隆的干物质生产量.试验证明,当土壤氮素资源的总体水平较低时,氮素资源的异质性分布对结缕草的生长有利;而当土壤氮素资源的总体水平较高时,结缕草在同质生境中的干物质生产量较高.在异质生境中,肥沃土壤带距离初始的结缕草分株的位置,也对结缕草的生产量产生影响.当结缕草克隆能够较早地从试验生境的肥沃土壤带中获取丰富的氮素资源时,其干物质生产量倾向于增加.
통과시험분석료생경토양담소이질성대우극륭식물결루초생장적영향.결과표명,생경중토양담소자원적총체수평、분포격국이급이자간적상호작용균현저영향결루초극륭적간물질생산량.시험증명,당토양담소자원적총체수평교저시,담소자원적이질성분포대결루초적생장유리;이당토양담소자원적총체수평교고시,결루초재동질생경중적간물질생산량교고.재이질생경중,비옥토양대거리초시적결루초분주적위치,야대결루초적생산양산생영향.당결루초극륭능구교조지종시험생경적비옥토양대중획취봉부적담소자원시,기간물질생산량경향우증가.
An experimental study was carried out to analyze the impacts of soil nitrogen heterogeneity on the growth of a clonal plant, Zoysia japonica. The total soil nitrogen supply in the habitats, its distribution and the interactions between the two factors all significantly influenced dry matter productions of Z.japonica clones. Z.japonica clonal production benefited from heterogeneous nitrogen distributions when the total soil nitrogen supplies in the habitats were relatively low. When the total soil nitrogen was relatively high, clonal production was substantially higher in homogeneous treatments. In heterogeneous habitats, the positions of fertile soil bands relative to the initial position of the Z.japonica ramets affected clonal production. When Z.japonica clones acquired abundant nitrogen from fertile soil bands earlier, their dry matter production was increased.