检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:张凤荣[1] 关小克[1] 王胜涛[2] 徐艳[1] 郭力娜[1]
机构地区:[1]中国农业大学资源与环境学院,北京100193 [2]北京市土肥工作站,北京100029
出 处:《土壤通报》2009年第6期1297-1302,共6页Chinese Journal of Soil Science
基 金:北京市自然科学基金项目(6082015);国家自然科学基金项目(70673104)资助
摘 要:随着生活水平的提高,人们越来越重视生态环境。大都市区农田的功能也由以生产功能为主,向生态服务与景观文化功能为主转变。因此,在农田的作物生产布局方面,要充分考虑城市生态环境保护和景观美化要求,在不同的区位或空间,安排适宜安全生产,并与景观相协调的作物。在农田土壤管理上,不能为追求高产而无限地培肥地力,而是要根据城市生态环境保护要求,划定限制培肥区,优化培肥区和培肥区。With people's living standard reaching a higher level, people pay more and more attention to the environment and ecology, as well as scenery enjoying. The main functions of farmlands have been transferring to ecological and sightseeing functions from productive function in metropolis area. For getting the multiply functions of agriculture, the spatial arrangement of crop planting should be coincidence with the environment protection and scenery beauty requirement. For farmland management, high fertility may not be important; the fertility of soil should be kept in a suitable level that could not made water polluted. Soil fertility also should be divided into three region,fertility controlling region, fertility optimizing region and fertility promoting region in metropolis area.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.222