|
|||||
|
|
| 稻鸭萍共作复合生态系统的物能特征分析 | |
| 引用本文： | 甄若宏,王强盛,周建涛,郑建初,何加骏,卞新民.稻鸭萍共作复合生态系统的物能特征分析[J].中国生态农业学报,2009,17(3):574-579. |
| 作者姓名： | 甄若宏 王强盛 周建涛 郑建初 何加骏 卞新民 |
| 作者单位： | 1. 江苏省农业科学院,南京,210014;南京农业大学农学院,南京,210095 2. 南京农业大学农学院,南京,210095 3. 江苏省农业科学院,南京,210014 |
| 基金项目： | 江苏省农业科技项目，江苏省环保科技项目，国家科技攻关重大项目 |
| 摘 要： | 对稻鸭萍共作生态系统物能流特征的分析结果表明,通过在稻田生态位添加鸭子和绿萍,使原来的稻田食物链结构趋向复杂化,增加了稻田生态系统的稳定性.稻鸭萍共作生态系统光能利用率最高,比稻鸭共作生态系统和常规稻作系统分别提高18.52%和23.08%;能流循环指数为0.096,显著高于稻鸭共作系统和常规稻作系统.此外,稻鸭萍共作生态系统氮磷钾各养分循环通量也表现为最高,显示稻鸭萍共作生态系统农田养分循环强度较高,对施肥的依赖程度较低,对环境压力小. |
| 关 键 词： | 稻鸭萍共作 光能利用率 能流循环指数 能量转化 养分平衡 |
| 收稿时间： | 2008/6/20 0:00:00 |
| 修稿时间： | 9/5/2008 12:00:00 AM |
Characteristics of substance and energy in rice-duck-azolla integrated farming system |
|
| ZHEN Ruo-Hong,WANG Qiang-Sheng,ZHOU Jian-Tao,ZHENG Jian-Chu,HE Jia-Jun and BIAN Xin-Min.Characteristics of substance and energy in rice-duck-azolla integrated farming system[J].Chinese Journal of Eco-Agriculture,2009,17(3):574-579. | |
| Authors: | ZHEN Ruo-Hong WANG Qiang-Sheng ZHOU Jian-Tao ZHENG Jian-Chu HE Jia-Jun and BIAN Xin-Min |
| Institution: | 1. Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; 2.College of Agronomy, Nanjing Agricultural University, Nanjing 210095, China;College of Agronomy, Nanjing Agricultural University, Nanjing 210095, China;Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;College of Agronomy, Nanjing Agricultural University, Nanjing 210095, China |
| Abstract: | This article studied the characteristics of substance and energy in rice-duck-azolla integrated farming (RDA) system. RDA system increases food-chain complexity and system stability because ducks and azolla are incorporated into rice paddy systems. Light utilization efficiency is highest in RDA, with respectively 18.52% and 23.08% higher than in rice-duck integrated farming (RD) and conventional farming (CK) systems. Energy circulation index in RDA is 0.096, significantly higher than in RD and CK. NPK flux is highest in RDA, implying that cycling intensity and recycled farmland nutrients are higher in RDA. RDA depends less on fertilizer and is therefore more friendly to the environment. |
| Keywords: | Rice-duck-azolla integrated farming Light utilization efficiency Energy circulation index Energy translation Nutrition balance |
| 本文献已被 维普 万方数据 等数据库收录！ | |
| 点击此处可从《中国生态农业学报》浏览原始摘要信息 | |
| 点击此处可从《中国生态农业学报》下载免费的PDF全文 | |