农学 >>> 农学总论 作物学 园艺学 土壤学 植物保护学 农药学 林学 畜牧学 兽医学 水产学
搜索结果: 1-9 共查到农学 N and P pools相关记录9条 . 查询时间(0.098 秒)
Although soil phosphorus is essential for vegetation growth it is not always found in labile forms, hampering its absorption by plants, and is limited in forest ecosystems. This study explores soil P ...
The roles of different tree species and their impacts are key in assessing the dynamics of soil restoration in afforested post-mining sites. The objective of this study was to compare the effect of Sc...
Wild herbivore populations are declining in many African savannas, a result of replacement by livestock (mainly cattle) and the loss of large plant-eaters, or megaherbivores, such as elephants.Althoug...
This paper presents detailed data on the biomass and element pools of six sample trees in the catchments of Plešné and Čertovo Lakes. Diameters and heights of the sample trees ranged from ...
Different mixtures of olive pomace (OP), olive mill wastewater (OMWW) and olive pruning residues (OPR) were aerobically co-composted under natural conditions. Compost temperature showed a sharp increa...
Great species richness in eastern Asia is the effect of a long history with low extinction and speciati0n rates,while great richness in northwestern North Am erica is due to recent rapid speciati0n ...
R-CHOc, irrespective of the type of amendment. The distribution of the carbohydrate fractions within the water-stable aggregates generally decreased with increasing time of sampling. At the 3rd and 6...
Grazers may influence nitrogen (N) pools and alter N inputs and outputs (losses) to the ecosystem in a number of ways. In this study, we evaluated N pools within the plant-soil system (0-30cm) and so...
The studies included 10 public indoor swimming pools and 3 public open-air swimming pools located in the city of Szczecin. In 2003, water samples were collected for detection of virulent amphizoic amo...

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...