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]中国科学院水利部水土保持研究所,陕西杨陵712100
出 处:《水土保持通报》1997年第5期17-22,共6页Bulletin of Soil and Water Conservation
摘 要:通过对中条山铜矿区尾矿坝的复田试验结果表明:30cm,60cm,100cm3种复土厚度,其土壤保肥、抗旱能力不同。在种植绿肥和施化肥后,新复田土壤熟化度在1年内达到与老复田地(15年)熟化程度同等肥力水平。作物产量也随复土厚度增加相应增加。The relationship between crop yield and both of the soil covered thickness and properties of reclaimed land within copper mine area in Shanxi province was studied. The result shows soil Physical properties as well as the capability of drought resistance are different duing to the differences of soil covered thickness. The fertility level of one-- year new reclaimed land after green manuring and fertilizing is almost equivalent to that of the fifteen years old reclaimed land. The crop yield increases with the thickness of covered soil increasing.
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

