农学 >>> 农学总论 >>> 农业基础学科 农学其他学科
搜索结果: 1-6 共查到农学总论 values相关记录6条 . 查询时间(0.074 秒)
Land serves as carrier of various terrestrial ecosystems. The variation of ecosystem functions and its economic value composition are mainly caused by land use and land cover changes. Based on dynamic...
Natural importance and economical and usefulness values (FVS) of meadows situated in the valley of the central Mogilnica River were assessed. The natural value was determined on the basis of: the num...
Climatic changes observed historically need to be known accurately in order to understand the present climatic conditions and to estimate climatic changes to be occur in future. In studies to be done ...
Assessment of soil structure and still more its changes is impeded by peculiarities of sampling and measurement. Unavoidable local destructions tend to advance use of small numbers of replicates, samp...
The study determines the graft take of walnut in Ordu province located in the East Black Sea Region. Grafting studies were carried out in nursery conditions in late August from 1993 to 2000. During th...
Using adapted methods for balanced experiments with waterfowl, the apparent (AMEn-0) and the true (TMEn-0) metabolizable energy of hull-less barley have been established. Despite the lower content of ...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...