Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《China Population Resources and Environment》 1991-01
Add to Favorite Get Latest Update


Xu Qi, (Institute of Soil science, Academia Sinica, Nanjing)  
Soils that grow in different natural environment have different soil fertili-ty. From soil fertility evolutive mechanism, this paper expounds that if cropping system andsafeguardings are not rational, soil resources will degenerate. This paper also analyses the im-portance of our agricultural ecological construction, its content and its devolopmental direc-tion.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Chinese Journal Full-text Database 2 Hits
1 Wang Hanjie(Department of Forestry, Nanjing Forestry University, 210037):;Distribution of Light Energy within Agroforestry Ecosystem.[J];Chinese Journal of Ecology;1991-01
2 Gong Lei(Institute of Sericulture,Chinese Academy of Agricultural Sciences, Zhenjiang, 212018;Material and Energy Flows in a Mulberry-Silkworm-Livestock Ecosystem.[J];Chinese Journal of Ecology;1991-01
Chinese Journal Full-text Database 10 Hits
1 JIANG Yue-lin, YAN Ping, WAN Zhi-hu, ANG Chao-dong(AnhuiAgriculturalUniversity,Hefei 230036);Illum ination on lntercropping of Poplar with Wheatand It'slnfluence on Yield of Wheat[J];AUHUI AGRICULTURAL SCIENCE BULLETIN;1999-04
2 ZHEN Zhan-xuan et al(Institute of Sericulture,Chengde Medical College,Chengde,Hebei 067000);Study on the Ecological Model of Mulberry Interplanting with Pasture and Farming Crops as Wind-checking and Sand-controlling in Northern Hebei Province[J];Journal of Anhui Agricultural Sciences;2008-09
3 SHI Xiao-li1;GUO Xiao-ping1;BI Hua-xing1;LI Yong-hong2.1 Key Laboratory of Soil and Water Conservation and Desertification Combating of Ministry of Education,Beijing Forestry University,100083,P.R.China;2 Greening Office of Forestry Bureau of Jixian County in Shanxi Province,042200,P.R.China;Light competition and yield of fruit-crop intercropping system in western Shanxi Province[J];Journal of Beijing Forestry University;2009-S2
4 YUAN Yu xin 1,WANG Jin feng 2,YAN Tong hui 3,WANG Ying 1, ZHANG Shi ling 1,LI Bao hui 1 (1.College of Forestry,Agricultural University of Hebei, Baoding 071000,China;2.Hebei Forestry School, Shijiazhuang 050000,China;3.Landscape Design Bureau of Gaocheng,Gaocheng 052100,China);The study on tree shading area and spacing under poplar-crop intercropping system[J];Journal of Agricultural University of Hebei;2002-02
5 ZHANG Jun-E HUANG Da-Zhuang* JIA Yu-Bin MA Jing-Jing ZHENG Jian-Wei YAN Hai-Xia(Agricultural University of Hebei,Baoding Hebei 071000,China);Preliminary Research on the Influence of Cluster Mulberry on Microclimate of Intercropped Fields[J];Science of Sericulture;2007-01
6 Liang Jialing; Huang Yansheng(AgriculturalScience Research institute of Mudanjiang, Agricultural Academy of Sciences of Heilongjiang Province.Mudanjiang 157041, P. R.China); Wang Fei; Wang Wen jie; Zhang Chengiun.; Nie Jiangli(NortheastForestry University;Fruit-crops Compound Ecological Model in ho Hilly Land[J];JOURNAL OF NORTHEAST FORESTRY UNIVERSITY;1999-04
7 Wang Ying 1, Yuan Yuxin 1, Pei Baohua 1, Zhang Shilian 2 (1 Hebei Agricultural University,Baoding 071000 2 Baoding Forestry Institute,Baoding 071000);A REVIEW TO TREE CROP INTERCROPPING IN CHINA[J];HEBEI JOURNAL OF FORESTRY AND ORCHARD RESEARCH;1999-03
8 YUAN Yuxin 1, WEI Hongxia 2, MA Rongze 2, PEI Baohua 1, JIA Yubin 1, WANG Ying 1 (1 Agricultural University of Hebei, Baoding 071000; 2 Froestry Engineering Management Center of Hebei Province,Shijiazhuang 050061);THE STUDY ON CROP YIELD UNDER POPLAR-CROP INTERCROPPING SYSTEM[J];Hebei Journal of Forestry and Orchard Research;2001-01
9 Pei Baohua Yuan Yuxin Wang Ying(Forestry College of Hebei Agricultural University,Baoding 071000);A COMPARISION STUDY ON THE EFFECT OF TREE SHADING AND REED MAT SHADING TO CROP YIELD[J];HEBEI JOURNAL OF FORESTRY AND ORCHARD RESEARCH;1997-04
10 ZHAO Zhong-bao, WAN Fu-xu, LIU Yi-lin ( Environmental Management College Of China , Qinhuangdao Hebei 066004; Nanjin Forestry University , Nanjing Jiangsu 210037);Ecof actor Changes' Impact on Wheat Output in Poplar-Crop System[J];Journal of Environmental Management College of China;2007-02
Chinese Journal Full-text Database 10 Hits
1 DAI Erfu\ CAI Yunlong\ FU Zeqiang (Department of Urban and Environmental Sciences & the Center for Land Studies, Peking University;Laboratory for Earth Surface Process,the Ministry of Education,Beijing,100871);Systematic Analysis and Assessment on Sustainable Land Use[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2002-02
2 Shi Ruixiang Kang Muyi (Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education;Institute of Resources Science: Beijing Normal University, 100875, Beijing, China);ARABLE LAND CHANGE AND ITS DRIVING FACTOR ANALYSIS IN THE TRANSITIONAL AREA BETWEEN PASTORAL AND AGRICULTURAL REGIONS ALONG NECT[J];JOURNAL OF BEIJING NORMAL UNIVERSITY(NATURAL SCIENCE);2000-05
3 ZHU Zheng hua,PU Li jie,PENG Bu zhuo,LIU Jing (Department of Urban & Resource Sciences,Nanjing University,Nanjing 210093,China);CHANGES IN THE QUANTITY OF AGRICULTURAL LAND IN YANGTZE RIVER DELTA WITH CONSIDERATION OF PROTECTION COUNTERMEASUES ——A CASE STUDY OF WUJIANG CITY[J];Resources and Enuironment In The Yangtza Basin;2001-04
4 WANG Zhao-hui~1, WANG Ke-lin~1, XIONG Yan~2, XU Lian-fang~1 (1. Institute of Subtropical Agriculture, The Chinese Academy of Sciences,Changsha 410125,China; 2. Faculty of Resource and Environment Science, Wuhan University, Wuhan 430079, china);TREND AND DRIVING FORCE OF CULTIVATED LAND USE CHANGE IN HUNAN PROVINCE[J];Resources and Environment in the Yangtze Basin;2004-01
5 LI Yu-ping1,CAI Yun-long2 (1.Department of Geography,Xingtai Institute,Xingtai 054001,China;2.Center for Land Study,Department of Resources,Environment and Geography,Peking University,Beijing 100871,China);ANALYSIS AND PREDICTION OF CROPLAND CHANGE AND GRAIN SECURITY IN ZHEJIANG PROVINCE[J];Resources and Environment in the Yangtze Basin;2007-04
6 CHEN Bai ming (Institute of Geographical Sciences and Natural Resources, CAS, Bejing 100101, China);A Blue Print of Land Use Region Based on Regional Indicator System for Sustainable Land Use in China[J];Progress In Geography;2001-03
7 LI Xian wen 1, Lin Pei 2 (1 China Land Surveying and Planning Institute, Beijing 100028, China; 2 China Agricultural University, Beijing\ 100094, China);The Theoretical Basis and Progress: Utility and Protection of the Farmer-land in Foreign and Home[J];Progress In Geography;2001-04
8 Jia Shaofeng Zhang Haoxi (Institute of Geography, Chinese Academy of Sciences, Beijing 100101) Meng Xiangjing (Institute of Demography, Renmin University of China, Beijing 100872);FORECAST AND COUNTERMEASURES OF THE CHANGE OF THE CULTIVATED AREA OF CHINA[J];PROGRESS IN GEOGRAPHY;1997-01
9 Liu Yansui (Institute of Geography, Chinese Academy of Sciences, Beijing 100101);FAMILY MODELS USED IN OPTIMAL ALLOCATION OF REGIONAL LAND USE[J];PROGRESS IN GEOGRAPHY;1999-01
10 SUN Xian guo, CAO Kang lin, WANG Peng (The School of the Earth and Environmental Science, Zhongshan University, Guangzhou 510275, China);A study on change types of cultivated land resource in Guangdong Province[J];PROGRESS IN GEOGRAPHY;1999-02
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved