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: 1-5 共查到国际动态 农学 role相关记录5条 . 查询时间(0.17 秒)
Trees that grow fast, live long lives and reproduce slowly account for the bulk of the biomass -- and carbon storage -- in some tropical rainforests, a team of scientists reports in a paper published ...
Approximately 25 to 50 percent of a living tree is made up of water, depending on the species and time of year. The water stored in trees has previously been considered just a minor part of the water ...
April 15, 2007,The Department of Agriculture's top veterinarian, Dr. W. Ron DeHaven, has been chosen as the next AVMA executive vice president.
14 NOV 2006,The Louisiana Department of Wildlife and Fisheries (LDWF) is actively involved in an Avian Flu Early Detection Surveillance System to check for this virus in wild waterfowl and shorebirds ...
20 Nov 2006,The role of snags in freshwater environments is the next topic for a highly successful series of public seminars being held by NSW Department of Primary Industries (DPI).The seminar will b...

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...