农学 >>> 农学总论 >>> 农业基础学科 农学其他学科
搜索结果: 1-14 共查到农学总论 PATTERNS相关记录14条 . 查询时间(0.093 秒)
Fertility problems of mares on a well-managed breeding farm with thoroughbred stallions have been ascribed mostly to contamination of the reproductive apparatus of females with pathogens, particular...
Records from a 76-year investigation into effects of line breeding and selection of Hereford cattle, and concurrent weather records, were used to assess effects of weather patterns on growth of suckli...
Hourly grass pollen concentrations were recorded over a 10-year study period at an aerobiological station of Badajoz (SW Spain). The record was carried out by means of a Burkard spore trap.
This study outlines the long-term trends of fertilizers consumption in the Czech Republic and Poland and their impact on actual yield development of main crops for the period 1986-2005. In both countr...
The study assessed selected characteristics of documents published in national journals and other publications in the countries which participate on the editorial board of an international journal JCE...
This study aimed at establishing simple stylized facts on relationships between the share of agriculture and its subsectors in GDP and GDP per capita in Uganda. The study utilized both trend and regr...
The concept of competition or complementarity between tree and crop roots for below ground resources have been a major debate in simultaneous systems. Root studies were conducted in three cropping sys...
Two field experiments were conducted at the Experimental Farm of the National Research Centre at Shalakan, Kalubia Governorate, Egypt during the 2005 and 2006 seasons to study the effect of three weed...
Based on the data collected from 500 emerging farmers that were randomly selected from nine provinces of South Africa, this study determines the patterns of access and utilization of output market by ...
The current work was carried out on the soils at four locations in North Sinai (Baluzza, Romana, Beir El-Abd and Al-Tina plain (south port said), which are considered among the most promising potent...
Cracking patterns have been investigated in field conditions at three different sites in the Vertisols of the Sudan Gezira. The selected sites differed in particle size distribution with the clay con...
When a field or a small watershed is repeatedly surveyed for soil water content, sites often can be spotted where soil is consistently wetter or consistently dryer than average across the study area. ...
The Ráckeve-Soroksár Danube has a great importance as it is the second largest side arm in the Hungarian section of the river Danube and many demands of exploitation are expected. The aim of this stu...
A rich material of Heteroptera extracted with Berlese funnels by Dr. I. Loksa between 1953–1974 in Hungary, has been examined. Altogether 157 true bug species have been identified. The ground-living h...

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...