| 控/缓释肥在不同介质中的氮素释放特性及其肥效评价 |
| |
| 引用本文： | 杜建军,廖宗文,毛小云,刘可星,冯新.控/缓释肥在不同介质中的氮素释放特性及其肥效评价[J].植物营养与肥料学报,2003,9(2):165-169. |
| |
| 作者姓名： | 杜建军 廖宗文 毛小云 刘可星 冯新 |
| |
| 作者单位： | 1.仲恺农业技术学院植物营养与肥料研究室 广东广州510225; |
| |
| 基金项目： | 国家高技术研究发展计划(863计划,2001AA246023);广东省科技计划百项工程(2KB045601N); 广东省重点科技攻关项目(A20405); 上海市科技兴农重点攻关项目[农科攻字(2002)第4-2-2号]资助. |
| |
| 摘 要： | 以水、土壤、砂子、土壤+砂子和土壤+沸石为介质,研究了5种控/缓释肥的溶(淋)出特征。结果表明,由于性质不同,同一肥料在不同介质中的溶(淋)出率和溶(淋)出模式有很大差异。水中溶出率虽可以快速比较不同控/缓释肥的溶出速率,但用以估测肥料在田间的实际肥效,则产生较大的误差。客观、合理地评价控/缓释肥,应该在肥料 土壤 作物系统中考虑。相对而言,考虑土壤因子的土柱淋出率法较水中溶出率法更为接近田间实际。
|
| 关 键 词： | 控释肥 缓释肥 介质 养分释放特性 |
| 文章编号： | 1008-505X(2003)02-0165-05 |
| 修稿时间： | 2002年8月9日 |
N release characteristics of controlled/slowed-release fertilizer in different media and its effects evaluation |
| |
| DU Jian jun,LIAO Zong wen,MAO Xiao yun,LIU Ke-xing,FENG Xin.N release characteristics of controlled/slowed-release fertilizer in different media and its effects evaluation[J].Plant Nutrition and Fertilizer Science,2003,9(2):165-169. |
| |
| Authors: | DU Jian jun LIAO Zong wen MAO Xiao yun LIU Ke-xing FENG Xin |
| |
| Affiliation: | 1.Plant Nutrition and Fertilizer Lab.;Zhongkai Agrotechnical College;Guangzhou 510225;China; |
| |
| Abstract: | Several media (water, soil, sand, mixture of soil and sand, and mixture of soil and zeolite) were used to study the nutrient release characteristics of five controlled release fertilizers (CRFs) or slow release fertilizers (SRFs). The results showed that for a fertilizer there were significant differences in release pattern and release rate when dissolving or leaching in different media due to the different properties. So considerable errors might occur if water dissolution rate method was used to estimate the fertilizer efficiency although the method can make quick comparisons of nutrient release rates among different CRFs/SRFs. More objective and reasonable evaluation of CRFs/SRFs should be taken in the system of "Fertilizer soil crop". Comparatively, soil column leaching method was much closer to the field reality than water dissolution rate method. |
| |
| Keywords: | |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《植物营养与肥料学报》浏览原始摘要信息 |
|
点击此处可从《植物营养与肥料学报》下载全文 |
|
