| 不同土地利用和管理方式对黑土肥力的影响 |
| |
| 引用本文： | 侯雪莹,韩晓增,王树起,宋春.不同土地利用和管理方式对黑土肥力的影响[J].水土保持学报,2008,22(6). |
| |
| 作者姓名： | 侯雪莹 韩晓增 王树起 宋春 |
| |
| 作者单位： | 1. 中国科学院东北地理与农业生态研究所,黑龙江,哈尔滨,150081;中国科学院研究生院,北京,100049
2. 中国科学院东北地理与农业生态研究所,黑龙江,哈尔滨,150081 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划)，中国科学院知识创新工程项目 |
| |
| 摘 要： | 基于中国科学院海伦农业生态试验站22 a长期定位实验,研究了不同土地利用和管理方式对黑土肥力的影响。结果表明,不同土地利用方式促使土壤肥力发生不同的变化,裸地生态系统由于无有机质输入和无植被保护,土壤肥力逐年下降;草地植被覆盖使黑土全碳、全氮、碱解氮含量逐年提高;农田生态系统施肥管理能减缓土壤肥力降低,化肥配施有机肥增加土壤养分库,提高土壤肥力。不同覆盖特定的因子影响特殊的土壤酶活性。自然植被恢复对土壤转化酶和磷酸酶活性的影响大于增加土壤养分含量(碳、氮、磷含量)的影响。黑土自然植被恢复和农田土壤有机-无机肥配施是保持和增加黑土有机C,N库稳定性以及提高土壤肥力的重要途径。
|
| 关 键 词： | 土壤肥力 自然恢复 休闲裸地 施肥管理 黑土 |
Different Land Uses and Management Effects on Soil Fertilities in Black Soil |
| |
| HOU Xue-ying,HAN Xiao-zeng,WANG Shu-qi,SONG Chun.Different Land Uses and Management Effects on Soil Fertilities in Black Soil[J].Journal of Soil and Water Conservation,2008,22(6). |
| |
| Authors: | HOU Xue-ying HAN Xiao-zeng WANG Shu-qi SONG Chun |
| |
| Institution: | HOU Xue-ying1,2,HAN Xiao-zeng1,WANG Shu-qi1,SONG Chun1,2 |
| |
| Abstract: | Based on the long-term position experiment in Hailun Agricultural Ecology Station of Chinese Academy of Sciences,the characteristics of soil fertilities in black soil under different land uses and management were investigated.The results showed that there was great significance among the soil fertilities under different land uses.Soil fertility in NF sharply decreased cause of removal of vegetation.Soil total C,total N and available N in natural restoration were enhanced significantly.Soil fertilization management could prevent the decreasing of soil fertility.Organic manure increased the content of soil nutrition pools,and improving soil fertility.There may be qualities unique to each cover crop that increasing the activity of special enzymes.Special factors of different land uses could influence different soil enzymes activities.Natural restoration influenced the activity of invertase and phosphatase more than soil fertilization(C,N and P).Both natural vegetation restoration and long-term fertilization are importance in increasing soil organic C and N pools,and improving soil fertility. |
| |
| Keywords: | soil fertility natural restoration fallow bare fertilization management black soil |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水土保持学报》浏览原始摘要信息 |
| 点击此处可从《水土保持学报》下载免费的PDF全文 |
|
