土壤磷水平对柱花草株高、根长及生物量的影响  

Influence of Soil Phosphorus Levels on Plant Height, Root Length and Biomass of Stylosanthes

作　　者：郭轶敏[1] 文亦芾[1] 史亮涛[2] 金杰[2] 陈达飞[1] 彭健[1] 何超[1] 罗富成[1] 

机构地区：[1]云南农业大学动物科技学院草学系,云南昆明650201 [2]云南省农业科学院热区生态农业研究所,云南元谋651300

出　　处：《草业与畜牧》2014年第1期1-4,21,共5页Pruataculture & Animal Husbandry

基　　金：国家自然基金"柱花草磷效率相关性状基因定位及低磷胁迫基因差异表达研究(31160481)";"柱花草对低磷胁迫的响应及磷效率遗传基础研究(30960266)"资助

摘　　要：通过对8个柱花草品种(系)进行4个不同磷水平处理,在收获前对柱花草的生长情况进行调查,分别测量其株高、主根长和单株生物量,研究土壤磷水平对柱花草株高、根长及生物量的影响,旨在初步筛选耐低磷的柱花草品种(系)。结果表明:随着施磷量的减少,各柱花草品种(系)的平均株高、主根长和单株生物量总体呈下降趋势。其中,1号品种即西卡柱花草最耐低磷,5号品种即热研5号柱花草较耐低磷,7号柱花草即GC1463品系最不耐低磷。Different concentrations of phosphorus treat with eight varieties （lines） of stylosanthes. A series trials have been carried out for investigating the growth of Stylosanthes, measuring its height, root length and plant biomass before harvest, studying the affect of soil phosphorus levels on Stylo height, root length and biomass. Initial screening low resistance phosphorus Stylo varieties （lines） . The results showed that： with the reduction in the amount of phosphorus, the average plant height, root length and plant biomass of the Stylo varieties （lines） were overall downward trend. Among them, the 1st species that Sika Stylo, with the most sustained reductions in phosphorus levels of height did not change significantly （P〉~0.05） , so it was more resistant to phosphorus; the 5th varieties that Reyan the 5th Stylo from plant height, root length and plant biomass in terms of the changes, was more resistant to phosphorus; the 7th Stylo, was the most intolerant strain GC1463 phosphorus.

关 键 词：柱花草 品种(系) 耐低磷 株高 主根长 单株生物量 

分 类 号：S541.062[农业科学—作物学]