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: 1-4 共查到农学 agricultural productivity相关记录4条 . 查询时间(0.097 秒)
Th e objective of the paper is to quantify the eff ect of the R&D investments on agricultural productivity in the Czech Republic using the co-integration analysis. Th e eff ect of the R&...
This study attempts to examine the empirical relationship between trade and total factor producitvity (TFP) in the agricultural sector using both cross -sectional (across nine agricultural commodities...
An assessment of fertilizer use and other integrated practices was carried out with two hundred farmers selected by stratified random sampling from twenty villages in Kano and Katsina States of Nigeri...
In this study, data collected from 120 rural households located in two distinct socio-cultural locales of Benin was used to assess the impact of 20 development projects on agricultural productivity. A...

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...