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:潘占兵[1] 蒋齐[1] 温学飞[1] 左忠[1] 郭永忠[1]
机构地区:[1]宁夏农林科学院荒漠化治理研究所,宁夏银川750002
出 处:《西北农业学报》2004年第4期115-119,共5页Acta Agriculturae Boreali-occidentalis Sinica
基 金:国家十五重点科技攻关重大项目(FS2001-05);自治区"十五"重点科研项目(编号:2002-011-01)。
摘 要:描述了长城沿线农牧交错区天然草场退化现状,指出退化主要原因是干旱少雨、超载放牧、滥垦和不合理利用土地、滥采乱挖。针对天然草场退化现状,提出通过围栏封育,灭杂草,鼠虫害防治等技术对退化草场进行改良。针对草场利用中存在的问题,提出建立合理的放牧制度,实行以草定畜、加强畜牧业基础设施建设、优化畜群结构、压缩耕地、发展人工草地等措施促进退化天然草场植被恢复。为北方长城沿线农牧交错区退化草场植被恢复、生态建设提供技术支撑和政策依据。The actuality of degenerated nature grassland in northern agro-grassing acetone along the line of the great wall was described in this paper. The degenerated reasons of nature grassland were analyzed which were drought and poor rains 、 over-grazed, wasted land-reclamation under no plan and land -utilization without reason , deluge fell and dug. According to the status quo, the technological measures and strategies for rejuvenation of degenerated natural grassland such as enclosing and blanking breed, weeding wild grass, preventing from mice and pests were put forward .The problems of using grassland should be solved through setting up proper herd system; carrying out the yield of grass corresponding the herds; enforcing the basic establishment building of stock raising; optimizing construction of the herds; reducing field; developing artificial grassplot to accelerate the rejuvenation of the degenerated grassplot. It provided technological support and policy basis for rejuvenation of degenerated natural grassland in north agro-grazing acetone along the line of great well.
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:216.73.216.117