不同钾营养效率玉米品种的筛选  

Screening of maize varieties with different potassium nutrient efficiencies

作　　者：王西志[1] 王斌[2] 李迎春[3] 韩鹏辉[1] 彭正萍[1] 

机构地区：[1]河北农业大学资源环境学院,河北保定071001 [2]河北农业大学理学院,河北保定071001 [3]中国农业科学院农业环境与可持续发展研究所,北京100081

出　　处：《中国土壤与肥料》2012年第1期64-68,88,共6页Soil and Fertilizer Sciences in China

基　　金：河北省自然科学基金项目(C2010000755);国家973计划(2007CB109302);国家自然科学基金(31071362)

摘　　要：采用营养液培养和土壤盆栽试验相结合的方法,对40个玉米杂交种进行了典型钾营养效率的筛选,同时综合考虑品种的吸收和利用特性,以生物量、吸钾量、钾利用指数、钾敏感度为指标采用聚类分析方法,结合品种稳定性,筛选出典型钾营养效率玉米品种。结果表明,蠡玉18、永研4号、冀单31为高效敏感型,豫玉23为高效不敏感型,纪元1号、兴农998为低效敏感型,这为后续深层钾素高效吸收和利用机理的研究提供了基础材料,也对实际生产中因地制宜选择玉米种植品种有一定指导意义。In this study, the nutrient solution and soil pot cultural experiments were combined to screen the typical potassi- um （K） nutrient efficiency varieties among 40 maize hybrids. The typical varieties with different potassium nutrient effi- ciencies were screened under some indexes, such as the absorption and utilization characteristics of K of different maize vari- eties, comprehensively, the methods of cluster analysis based on the biomass, potassium absorption, utilization index and potassium sensitivity, the variety stabilities, et al. The results showed that three varieties （liyu 18, yongyan 4 and Jidan 31 ） were high-efficiency and high-sensitive. Then the variety of Yuyu 23 was the high-efficiency but low-sensitive. Jiyuan 1 and Xingnong 998 varieties were the low-efficiency but high-sensitive. This classification types not only provided the basic materials for the subsequent deep study on the mechanism of high K absorption and utilization, but also had some guiding significance in actual production to select the suitable maize planting varieties to use in local conditions.

关 键 词：钾营养效率 玉米品种 聚类分析 品种筛选 

分 类 号：S513[农业科学—作物学] S143.3