不同磷浓度对玉米生长及磷、锌吸收的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (5): 903-906.

不同磷浓度对玉米生长及磷、锌吸收的影响

张富仓¹, 康绍忠^1,2, 龚道枝¹, 李志军¹

1. 西北农林科技大学旱区农业水土工程教育部重点实验室, 杨凌 712100;
2. 中国农业大学水利与土木工程学院, 北京 100083

收稿日期:2003-12-11 修回日期:2004-09-10 出版日期:2005-05-15 发布日期:2005-05-15
通讯作者: 张富仓,男,1962年生,教授,博士生导师.主要从事土壤-植物系统水分和养分迁移动力学研究,发表论文50余篇.Tel:029-87092473;E-mail:Zhangfucang@tom.com
基金资助:
国家自然科学基金重点项目(50339030)和国家自然科学基金资助项目(50279043).

Maize growth and phosphorous-and zinc uptake under different phosphorous supply levels

ZHANG Fucang¹, KANG Shaozhong^1,2, GONG Daozhi¹, LI Zhijun ¹

1. Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China;
2. College of Water Resources and Civil Engineering of China Agricultural University, Beijing 100083, China

Received:2003-12-11 Revised:2004-09-10 Online:2005-05-15 Published:2005-05-15

摘要/Abstract

摘要： 在不同磷水平(0.1、1.0、5.0、10和100μmol·L^-1P)的水培液中培养玉米苗,测定不同培养时期玉米的生长和玉米植株对P、Zn吸收和利用效率.结果表明,玉米在100μmol·L^-1P的溶液中生长速率最大,而根冠比在0.1μmol·L^-1P的溶液中为最大.随着水培液中P水平的增加,植株对P的吸收速率增加,而利用效率降低;玉米根系含Zn量增加,而冠层含Zn量变化不大,说明增P使Zn在根内富集,Zn向冠层转移速率较小,玉米幼苗根系中P和Zn的浓度呈正相关关系.

关键词: 磷水平, 玉米生长, 磷吸收, 锌吸收

Abstract: By the method of solution culture,this paper studied the P and Zn uptake of maize at its growth stages under different P supply levels.The results showed that maize growth reached its maximum at the supply level of 100 μmol P·L^-1,while the root/shoot ratio was the highest at 0.1 μmol·L^-1 P supply.Increase of P concentration in culture solution promoted the uptake of P,but decreased its utilization rate.The Zn content in root increased with increasing P supply,while that in shoot varied little,which meant that the Zn transportation rate from root to shoot had little change with increasing P concentration.There was a positive correlation between the concentrations of Zn and P in maize seedling roots.

Key words: P supply level, Maize growth, P uptake, Zn uptake

中图分类号:

S311

张富仓, 康绍忠, 龚道枝, 李志军. 不同磷浓度对玉米生长及磷、锌吸收的影响[J]. 应用生态学报, 2005, 16(5): 903-906.

ZHANG Fucang, KANG Shaozhong, GONG Daozhi, LI Zhijun . Maize growth and phosphorous-and zinc uptake under different phosphorous supply levels[J]. Chinese Journal of Applied Ecology, 2005, 16(5): 903-906.

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