| 春小麦调亏灌溉对土壤钾素养分的影响 |
| |
| 引用本文： | 张恒嘉,许健.春小麦调亏灌溉对土壤钾素养分的影响[J].灌溉排水学报,2009,28(1). |
| |
| 作者姓名： | 张恒嘉 许健 |
| |
| 作者单位： | 张恒嘉,ZHANG Heng-Jia(甘肃农业大学,工学院水利系,兰州,730070;中国科学院寒区旱区环境与工程研究所临泽内陆河流域综合研究站,兰州,730000);许健,XU Jian(甘肃农业大学,工学院水利系,兰州,730070)
|
| |
| 基金项目： | 国家自然科学基金，甘肃省高等学校研究生导师科研项目，甘肃农业大学科技创新基金 |
| |
| 摘 要： | 对河西绿洲灌区春小麦调亏灌溉2年后的土壤速效钾和全钾的变化进行了研究,并用配对样本t检验(双尾检验)对小麦收获时土壤钾素养分指标年际间的差异、土壤全钾与速效钾及其与全生育期调亏供水量间的关系进行了分析。结果发现,春小麦调亏灌溉对土壤钾素养分有明显影响,2004年小麦收获时0~20、20~40、0~40cm土层全钾、速效钾均显著低于2003年。回归分析发现,调亏灌溉春小麦收获时0~20 cm土层全钾和速效钾与小麦全生育期供水量呈线性正相关,0~20 cm和0~40 cm土层速效钾也随着全钾的增加呈显著线性增加的趋势。
|
| 关 键 词： | 速效钾 全钾 调亏灌溉 春小麦 |
Effects of Regulated Deficit Irrigation on Soil Potassium Nutrients in Spring Wheat Field |
| |
| ZHANG Heng-Jia,XU Jian.Effects of Regulated Deficit Irrigation on Soil Potassium Nutrients in Spring Wheat Field[J].Journal of Irrigation and Drainage,2009,28(1). |
| |
| Authors: | ZHANG Heng-Jia XU Jian |
| |
| Institution: | 1.Department of Water Resources Engineering;School of Engineering;Gansu Agricultural University;Lanzhou 730070;China;2.Linze National Field Station for Farmland Ecosystem;Hydrology and Ecology Laboratory of Watershed;CAREERI;CAS;Lanzhou 730000;China |
| |
| Abstract: | The dynamics of soil available potassium(SAK) and total potassium(STK)in spring wheat field after two years(2003 and 2004) of regulated deficit irrigation(RDI) were studied in Hexi oasis irrigation region,the differences in soil potassium indexes at harvest between the two experimental years were analyzed using Paired-Samples T Test(2-tailed),and the relationships between SAK,STK and the total amount of irrigation water(IR)throughout wheat growing seasons and that between SAK and STK were analyzed.The resul... |
| |
| Keywords: | soil available potassium soil total potassium regulated deficit irrigation spring wheat |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
