2012年我国有机食品行业发展预测分析

中国有机食品正处在快速发展时期．但主要用于出口。因为有机食品在国际市场上大热,出口利润也相对较高,许多生产企业更倾向于出口。 而国内有机食品销售渠道众多,主要体现在：①国际零售集团：家乐福、麦德龙、沃尔玛、乐购等已经在全国主要市场布局,易初莲花、吉之岛、百佳等在中国局部站稳了脚跟;     

2009:中国有机农业运动的转折点——访中绿华夏有机食品认证中心郭春敏常务副主任

<正>与常规化学农业相区别,有机农业被认为是农业发展的健康方式,不但能在农产品质量安全、个人与社会的健康、经济的可持续发     

广元市元坝区种子市场的现状分析

调查当前种子市场的现状,分析发展动态,总结《种子法》颁布实施以来元坝区良种推广、市场监管方面取得的成效,并针对当前种子市场存在的问题、未来发展的要求提出相应的对策和建议。     

农村太阳能普及率达20% 将产生1200亿元市场

<正>中国家电协会秘书长姜风日前表示,如果农村地区的太阳能热水器普及率达到20%,将会给全行业带来1200亿元以上的销售额。根据国家发改委能源所最近的研究报告,2008年,我国太阳能热水器使用量和年产量均占世界一半以上。目前,太阳能热利用     

美国8种土壤的活性腐植酸和难溶性钙质腐植酸盐中碳官能团的特性分析

Solid state13C nuclear magnetic resonance(NMR)spectroscopy is a common tool to study the structure of soil humic fractions;however,knowledge regarding carbon structural relationships in humic fractions is limited.In this study,mobile humic acid(MHA)and recalcitrant calcium humate(CaHA)fractions were extracted from eight soils collected from six US states and representing a variety of soils and ecoregions,characterized by this spectroscopic technique and analyzed for statistical significance at P≤0.05.We found that the abundances of COO and N–C=O functional groups in the MHA fractions were negatively correlated to soil sand content,but were positively correlated to silt,total N and soil organic carbon contents.In contrast,the abundances of the COO and N–C=O functional groups were only positively correlated to the content of clay in the CaHA fractions,indicating that the two humic fractions were associated with diferent soil components.The two13C NMR peaks representing alkyls and OCH3/NCH were negatively correlated to the peaks representing aromatics,aromatic C–O and N–C=O/COO.Comparison of the sets of data from13C NMR spectroscopy and ultrahigh resolution mass spectrometry revealed that the aromatic components identified by the two methods were highly consistent.The comparison further revealed that protein in MHA was associated with,or bound to,the nonpolar alkyl groups,but a component competitively against(or complementary to)aromatic groups in the MHA composition.These observations provided insight on the internal correlations of the functional groups of soil humic fractions.     

《农业展望》全国首份农产品市场分析与预测专业期刊

《农业展望》是经国家新闻出版总署批准，由中华人民共和国农业部主管、农业部市场与经济信息司指导、中国农业科学院农业信息研究所主办的综合性农业科技类刊物。2005年8月创刊，面向国内外公开发行，设有“产品预测”、“农业生产展望”、“农业消费展望”、“农业贸易展望”、“农业经济展望”、“农业科技展望”和“数据信息”七大主要栏目。