>>> 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 特色库
搜索结果: 1-15 共查到Nitrogen Fertilization相关记录42条 . 查询时间(0.143 秒)
Nitrogen (N) fertilization is a commonly applied silvicultural treatment in intensively managed coast Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) plantations. Field trials were e...
High variability due to soil heterogeneity and climatic conditions challenge measurement of greenhouse gas (GHG) emissions as influenced by management practices in the field. To reduce this variabilit...
Bahiagrass (Paspalum notatum) is one of the most important forage grasses in subtropical region of USA and other tropical regions of the world. Although tolerant to short term flooding, bahiagrass is ...
Water and nitrogen (N) management are key factors for sustainable pear production in many areas. Effects of integrated N fertilization and irrigation systems, rootstocks, and cultivars on pear (Pyrus ...
Our objective was to determine the differences in the rate and extent of dry matter digestion between barley subjected to differing agronomic variables. Two malting barley varieties, Copeland and Metc...
To investigate the effect of nitrogen fertilization on the quality of tropical grass silage, guinea grass grown with 3 types of nitrogen fertilizers, namely, urea, ammonium sulfate, and compound ferti...
The growth and yield responses of three newly released cotton varieties to nitrogen fertilization were evaluated in a two-year (2006 -2007) field experiment at Gezira Research Station (GRS), Central S...
Effect of Nitrogen Fertilization on Rocket Plants Tolerance to Cadmium and Their Chemical Composition.
We investigated the effects of nitrogen fertilizer levels in nutrient solution applied before/after flower budding on blasting in the winter flowering of Eustoma grandiflorum (Raf.) Shinn.
Two crop rotation cycles were evaluated to determine the effect of cropping systems and N fertilization on the yield and efficiency of N in maize. Maize was grown on plots which had previously support...
Previous studies carried out in smallholder irrigation schemes in South Africa showed that bird damage to emerging seedlings reduced crop stand and yield of maize. Transplanting offered an opportunity...
The effects of nitrogen (N) application (32, 72 and 112 kg N ha-1 in 2000, and 32, 92 and 152 kg N ha-1 in 2001) and water-saving irrigation and their interaction on grain yield and yield components o...
Vitamin U (VU) concentration in cabbages harvested in Hokkaido ranged from 7.0 - 66.2 mg kg−1, and the mean was 28.9 mg kg−1 (1996-1998, n=92). Among cropping seasons, the mean VU concentr...
With increased environmental pressures, cotton producers may need to improve the efficiency of N fertilization. Including foliar applications in a cotton fertility program can improve N efficiency thr...
In the years 2005-2007 at the Pawłowice Research Experimental Station (51°09’ N; 17°06’ E) of the Wrocław University of Environmental and Life Science an investigation was carried out with m...

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...