>>> 哲学 经济学 法学 教育学 文学 历史学 理学 工学 农学 医学 军事学 管理学 旅游学 文化学
搜索结果: 1-15 共查到perennial相关记录35条 . 查询时间(0.062 秒)
A hundred years after Turesson first clearly described how locally adaptive variation is distributed within species, plant biologists are making major breakthroughs in our understanding of mechanisms ...
Occurrence of selected perennial weeds has been monitored at control sites across the Czech Republic since 1989, and trends of their occurrence have been evaluated. The monitoring has been aimed mainl...
Perennial pepperweed is an invasive plant that is expanding rapidly in several plant communities in the western United States. In California, perennial pepperweed has aggressively invaded seasonal wet...
Manganese (Mn) is an important micronutrient in plant development. In order to test its capability to delay the senescence related oxidative stress in perennial ryegrass (Lolium perenne L.); a pot exp...
From nodules of perennial xerophyte desert leguminous plants – Ammodendron conollyi, Astragalus villossimus, Astragalus unifoliolatus – 151 bacterial isolates have been isolated. The study of nodulati...
The first harvest of a dryland perennial wheat crop has taken place in NSW this summer and researchers are hoping for more to follow.Industry & Investment (I&I) NSW research agronomist, Richard Hayes,...
The growth of W492 (an annual strain of Oryza glaberrima Steud.) and Koshihikari (a perennial cultivar of Oryza sativa L.) after heading were compared to determine the growth characteristics of annual...
Dynamic states of water in the leaves and roots of perennial ryegrass (Lolium perenne L.) exposed to cold and heat stresses were studied by using 1H-NMR. NMR spin-lattice relaxation times (T1) of leav...
The 15N natural abundance method has been widely used for evaluation of symbiotic N2-fixation. The method inevitably requires a reference plant that reflects soil derived δ15N similar to that in a N2-...
The effects of rewatering after different periods of soil drought stress on the photosynthetic capacity of Leymus chinensis in pots were investigated. The plants were subjected to short-term (10-d), m...
Actual evapotranspiration from typical Mediterranean crops has been assessed in a Sicilian study area by using surface energy balance (SEB) and soil-water balance models. Both modelling approaches us...
To study characteristic of ornamental plants used for landscaping, 16 annuals and 24 perennials were sown on Sep. 19, 1996 and grown under reduced maintenance for 5 years. Species studied can be divid...
Effect of perennial grasses ploughed in as green manure on the occurence of net blotch in spring barley.
Farming on grasslands is an important part of organic faming. There is a perceptible trend of increasing acreages of grasslands in organic farming in the Czech republic too. Adjustment of subvent...

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...