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: 1-15 共查到农学 Competition相关记录22条 . 查询时间(0.125 秒)
In a world with rising levels of atmospheric carbon dioxide, experiments have shown that increased CO2 allows plants to photosynthesize more and use less water; however, warmer temperatures drive plan...
Natural regeneration and its relationship to micro-relief and weed competition were studied on 6 research plots in mountain spruce forests in the Šumava Mountains. The data on density regeneratio...
Many researchers treat firm-level competition as the origin of competition between nations. In other words, nations are as strong as their companies. Therefore, competition lies in “firm-level competi...
The International Competition Power (ICP) for a firm or a country is the indicator of suppression over other firms or countries with which it is competing in domestic and/or international markets.
In northern Laos, weeds are a major constraint to upland rice production in slash-and-burn systems. Two experiments were conducted to assess genotypic variation in ability to recover from weed competi...
Weeds competition in wheat (Triticum aestivum) crop was investigated at Adaptive Research Farm, Gujranwala during rabi, 2003-2004 and 2004-2005. The treatments comprised weed competition with crop f...
The continual presence of the same plant hosts in natural plant communities should favour microorganisms below as well as above ground. Selection pressure imposed by root exudates may favour differen...
To elucidate the effect of the number of seedling per hill on yield components and yield, rice plants cv. Nipponbare and Hourei were transplanted at three levels (1, 4, and 7) and two levels (4 and 7...
Agriculture of Shikoku District under International Competition : Current Status and Perspective.
The practice of intercropping pearl millet with cowpea is widespread among subsistence farmers in northern Namibia. In this region, the scarce and erratic rainfall may enhance competition for the limi...
Intercropping pearl millet with cowpea is a common practice in semiarid areas. Under limited water environments, competition for soil water between intercropped plants may be strong. Furthermore, the...
During a pot experiment run in three series over 2002-2005 on light and heavy soils, the process of competition between spring barley and field peas was investigated for three periods determined by th...
During a pot experiment run at the greenhouse laboratory of University of Warmia and Mazury in Olsztyn (53o46'26" N; 20o29'30" E) in three series over 2002- -2005 on light and heavy soils, the process...
The experiment was carried out according to additive design to study shoot and root competition between spring triticale and field bean during early stages of plant growth. It was conducted in plastic...
This shade house study examined the effect of competition on the growth performance of cultivated (Oryza sativa) and wild (Oryza punctata) rice species in Kenya. Growth was assessed for the two ...

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...