植物营养与肥料学报2011,17(3)：525-531 Plant Nutrition and Fertilizer Science
磷素子粒生产效率不同的小麦品种磷素吸收利用差异
阳显斌，张锡洲*，李廷轩，宋潇，胡宏松
（四川农业大学资源环境学院，四川雅安625014）
摘要：盆栽试验研究了130份小麦不同生育时期的干物重、磷素含量、子粒产量等指标，采用组内最小平方和的动态案类方法将供试品种按磷素子粒生产效率从低到高依次分为1、Ⅱ、、IV、V和VI6个类型，研究不同类型磷素吸收利用的差异。结果表明：1)供试品种的磷索子粒生产效率差异较大（CV=16.60%），I、Ⅱ、亚、IV、V 和V类品种的平均磷素子粒生产效率为P136.29、151.67、169.16、185.89、201.32、244.66g/g。子粒产量随磷素子粒生产效率提高量增加趋势（r=0.3203"*）。2)不同生育时期，小麦植株磷浓度与吸磷量类型间差异显著或极显著。成熟期磷素子粒生产效率与植株磷浓度极显著正相关（r=0.6969""），子粒产量与抽稳期、成熟期
植株吸磷量显著或极显著相关（r=0.2966*
=0.9271
。3)不同生育时期磷素于物质生产效率的类间差异
均达显著水平；成熟期磷索干物质生产效率与磷素子粒生产效率极显著正相关（r=0.7391'
4)拔节期、推
穗期和成熟期干物重均表现出随磷素子粒生产效率增加而增加的趋势，成熟期尤为突出。拔节期一成熟期磷素能力。
关键词：小麦；磷素子粒生产效率；产量；磷素吸收利用
中图分类号：S512.1
文献标识码：A
文章编号：1008-505X(2011)03-0525-07
Differences of phosphorus uptake and utilization in wheat cultivars with
differentphosphorususeefficiencyforgrainyield YANG Xian-bin, ZHANG Xi-zhou', LI Ting-xuan, SONG Xiao, HU Hong-song
(College of Resources and Enwironment, Sichuan Agricultural University, Yaan, Sichuan 625014, China)
Abstract: Through soil culture experiment, 130 wheat cultivars were used to evaluate their differences in dry matter weight, grain yield, phosphorus uptake and utilization at different growth stages. The tested wheat cultivars were classified into 6 types (i.e. I, II, II, IV, V and VI, I was the lowest, and VI was the highest) based on their phosphorus use efficiency for grain yield (PUE for grain yield) by using the MinSSw method. The results are as follows: (1) Differences of PUE for grain yield of the cultivars used in this study are very large (CV : 16.60%), the averages of PUE for grain yield for I, II, I, IV, V and VI, are 136.29, 151.67, 169.16, 185. 89, 201. 32, and 244. 66 g grain per gram of P. There is a significant positive correlation between PUE for grain yield and grain yield(r=0. 3203*°). (2) Significant differences are observed in phosphorus concentration and absorption of plants among the wheat types. There are significant correlations between plant phosphorus and PUE for grain yield at mature stage (r =0. 6969**), and the same as grain yield and phosphorus absorption at heading and mature stages (r = 0. 2966', r =0. 9271 **). (3) Significant differences are observed in phosphorus use efficiency for dry matter among six types at different growth stages. There is a significant correlation between PUE for dry matter and PUE for grain yield at the mature stage (r = 0. 7391**). (4) The dry weights are in creased with PUE for grain yield at different stages. The phosphorus content is an important factor for grain yield formation from the jointing to mature stages, and high PUE for grain yield wheat type has strong capacity of materia
收稿日期：2010-09-17
接受日期：2011-01-20
基金项目：国家自然科学基金（40901138）；国家科技支撑计划子课题（2008BAD98B03）；四川省科技厅应用基础项目（2010JY0083）资助。 00（86
*通讯作者E-mail；zhangxzhou@163.com
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