| 干湿循环下植生固沙材料N、P、K素释放特征研究 |
| |
| 引用本文： | 曲烈,杨久俊,乐俐,刘洪丽. 干湿循环下植生固沙材料N、P、K素释放特征研究[J]. 干旱区资源与环境, 2013, 0(1): 171-174 |
| |
| 作者姓名： | 曲烈 杨久俊 乐俐 刘洪丽 |
| |
| 作者单位： | 天津市软土环境与工程特性重点实验室/天津城市建设学院材料科学与工程系 |
| |
| 基金项目： | 国家自然科学基金(50772071、50972099);天津市高等教育科技发展基金计划项目(20110910)资助 |
| |
| 摘 要： | 采用沙柱法研究了不同干湿循环条件下水泥-土基植生固沙材料N、P、K素的释放特征。结果表明:加速干湿循环组N素累计淋出量初期较低和后期较高,N素中期出现较高的峰值与增加温度湿度有关;P、K素累计淋出量初期和后期均较低,中期淋出率峰值向后推移。P、K素初期和后期累计淋出量较低与土壤吸附固化作用有关。
|
| 关 键 词： | 植生固沙材料 干湿循环 控释肥 吸水剂 N、P、K素释放特征 |
NPK release characteristics of plant-sand-fixing materials under dry-wet cycle condition |
| |
| QU Lie,YANG Jiujun,YUE Li,LIU Hongli. NPK release characteristics of plant-sand-fixing materials under dry-wet cycle condition[J]. Journal of Arid Land Resources and Environment, 2013, 0(1): 171-174 |
| |
| Authors: | QU Lie YANG Jiujun YUE Li LIU Hongli |
| |
| Affiliation: | (Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment/Departmant of Materials Science and Engineering at Tianjin Institute of Urban Construction,Tianjin 300384,P.R.China) |
| |
| Abstract: | The NPK release characteristics of plant-sand-fixing materials under varies dry-wet cycle condition,using the sand column leaching method,was investigated.The results revealed that the N cumulative leaching content at early period under speeded dry-wet cycle condition is lower but one at late period is higher;but at the medium-term,with the higher temperature and humidity,the N leaching rate increases.The P and K cumulative leaching contents are lower at early and late periods,and their medium-term peak values are delayed.The phenomenona of the delayed peak values at the medium-term and reducing the cumulative leaching content of P,K nutrients in soil are attributable to the higher effects of soil adsorption and solidification. |
| |
| Keywords: | Plant-sand-fixing materials dry-wet cycle controlled-release fertilizer absorbent agent N、P、K release characteristics |
| 本文献已被 CNKI 等数据库收录！ |
