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
机构地区:[1]北京林业大学 [2]中国矿业大学,北京100083
出 处:《中国水土保持科学》2003年第4期92-95,105,共5页Science of Soil and Water Conservation
基 金:国家高技术研究发展计划(863计划)(2001AA322100)
摘 要:为解决干旱半干旱地区造林成活率低的问题,通过使用蓄水渗膜材料进行造林试验,与未使用蓄水渗膜袋造林进行比较,调查生长情况。结果表明,使用蓄水渗膜袋造林明显好于对照,造林成活率、苗木生长量与对照有显著差异。在乌兰布和沙漠,测量使用蓄水渗膜袋和未使用蓄水渗膜袋方式,各个不同深度土层的土壤含水量、蓄水渗膜袋埋放处含水量均有提高。In order to increase the survival rate of afforestation in arid and semi-arid area, afforestation experiment with water storage and controlled-release film to inquire into the state of growth which was in comparison with that without it showed the obvious differences in survival rate of afforestation and growth (hight and diameter) and that the experiment with it was obviously better than without it. In the soil of different depths, the water storage increased by using the water storage and controlled-release film which derived from the experiment in Wulanbuhe desert.
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:216.73.216.15