不同小麦基因型对土壤钾的吸收研究  

Study on Soil Potassium Uptake of Different Wheat Genotypes

作　　者：王姣爱[1] 杨萍果[2] 张定一[1] 姬虎太[1] 

机构地区：[1]山西省农业科学院小麦研究所,山西临汾041000 [2]山西师范大学种植系,山西临汾041000

出　　处：《山西师范大学学报（自然科学版）》2001年第2期53-56,共4页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：山西省自然科学基金资助项目!( 1 9991 1 1 6)

摘　　要：选用了 7个不同小麦基因型 ,进行了盆栽试验 .结果表明 :不同小麦基因型对钾的吸收存在显著差异 .在不同钾水平条件下 ,它们吸收利用土壤中的钾大部分来自非交换性钾源 ,其中矿物钾差异比较显著 .在低钾条件下 ,吸收矿物钾量的比例差异大于高钾条件下吸收的矿物钾比例 .因此 ,在缺钾土壤中 ,不同小麦基因型吸收矿物钾的量是筛选其耐低钾能力的重要指标 .本试验初选出晋麦 31号为耐低钾基因型 .Pot experiment was carried out using seven genotypes. The results showed that there exists significant differece among these genotypes. For different K levels, the most part of K absorbed by wheat is obtained from non exchangeable sources, among which the difference for mineral potassium is of relatively more significant. The difference among mineral K absorption proportion of wheat genotypes under low K condition is greater than that under high K condition. The ratio of mineral K condition. This study has selected Jinmai No. 31 as the low K tolerant genotype.

关 键 词：小麦 基因型 吸钾能力 非交换性钾 矿物钾 土壤 

分 类 号：S512.1[农业科学—作物学]