莆田市郊区蔬菜地土壤重金属分布特征研究     

李建飞 《莆田学院学报》2007,14(2):92-96,102

对莆田市郊区蔬菜地土壤中pH值和有机质、Pb、Cd、Cr、Ni、Cu、Zn的含量进行了测定,结果表明,莆田市郊区蔬菜地土壤重金属含量在地区内及地区间的差异较大,Ni、Cu平均含量以新度镇较高,Pb、Cd平均含量以镇海、拱辰办较高,Cr、Zn平均含量以黄石镇较高,各地区重金属元素受地区影响显著性排序为Zn>Cr>Cd>Pb>Cu>Ni。相关性分析表明,莆田市郊区蔬菜地土壤中部分重金属元素以及有机质间存在一定的相关性。所有样本中6种重金属均没有超过GB15618-1995二级标准值,但与福建省水稻土背景值比较,均有不同程度超背景值现象,其中Cr、Cu、Ni超背景值率较高,富集较明显。  相似文献   

目前我国精细化学工业的发展重点     

刘德峥 《平原大学学报》2004,21(3):1-7

介绍了精细化工产业的特点，指出了我国化学工业存在的问题，通过分析世界化学工业产业及产业技术发展趋势，提出了当前我国精细化工的发展重点。  相似文献   

发挥名人效应提升农产品品牌实现农民增收--著名音乐家施光南故里农业发展探讨     

方湖柳 《丽水学院学报》2003,25(3):25-27

当前在许多农村不可盲目地通过工业化、城市化来增加农民收入，而要根据当地实情更多地从农业本身寻找发展的突破口。以我国著名音乐家施光南故乡为例，探讨如何发挥名人效应以提高农产品品牌知名度和美誉度，最终达到农业增效、农民增收之目的。  相似文献   

玄武湖史谭二则   总被引：1，自引：0，他引：1  

李金堂 《南京晓庄学院学报》2003,19(3):24-27,32

南朝时期 ,玄武湖得到了有效的开发 ,最终从一个无固定堤岸的自然湖泊 ,建成为王公贵族的游苑。而北宋至明初这段历史时期 ,玄武湖又经历了废湖为田 ,还田为湖的沧桑演变。  相似文献   

面向精准灌溉的农田水势软测量     

卢胜利  田立国  孙文君  韩志江 《天津工程师范学院学报》2007,17(4):1-4

根据土壤-作物-大气连续体(SPAC)理论,水分在连续体内的运动主要由水势差决定。准确测定农田水势对于实施精准灌溉十分重要。文章介绍了基于农作物微环境信息采集与处理,通过混合软测量模型整体估算农田水势的新方法。  相似文献   

Design of an agricultural economic statistical digitalized system     

Leng Zhijie Wang Zhiqiang Wang Xi Li Qiang 《东南大学学报》2008,(Z1)

To improve the efficiency of the management of large farms, a digitalized system of economic statistics is designed based on the Internet platform of the digitalized agricultural integrated system of Friendship Farm, the largest farm in the world. The system can also realize data storage by using the access databank technology. A dynamic website system, based on ASP technology, is used to implement the on-line inquiry of the statistical index of the agricultural economy and the diagrams of the index every year. Furthermore, it can provide the value of comprehensive indicators of farms' economic profits for every year and a trend chart of the comprehensive appraisal of economic development, by using principal component analysis. An early-warning indicator boundary is decided based on the majority principle. The system can realize the farm's terminal data input with effective data-collecting channels and a normative gathering scope and system. This system breaks through the stand-alone database system in agricultural digitalized research to realize the database system in the Internet environment by integrating the existing technologies in China. The system lays a foundation for the further integrated research on the network platform of the digitalized agricultural integrated system in Friendship Farm.  相似文献   

Uncertain hog futures: life,death, and arbitrage on the factory farm     

Jan Dutkiewicz 《Journal of Cultural Economy》2020,13(3):278-289

ABSTRACT

Between 2013 and 2014, PED virus (PEDv) swept through American pig farms, killing millions of animals and causing a market panic that drove the prices of both physical pork and lean hog futures to all-time highs. However, a divergence between pricing in financial markets and on-farm realities allowed some producers to reap record profits via a unique form of biological arbitrage. This arbitrage was novel in that it allowed for an underlier (pigs) to be used to profit from fluctuations in the price of a derivative (lean hog futures). This article explores the case of PEDv to examine the entanglements and divergences between ‘real’ and ‘abstract’ values in financialized industries, paying particular attention to the schisms between the imaginaries and practices of actors in the financial and tangibly productive links of the agricultural value chain. To do so, it examines the historical co-constitution of American agriculture and the financial sector, and shows how in the contemporary moment these two ever-more-intertwined sectors are nonetheless marked by important differences. It argues that the nature of agricultural production can confound the expectations of finance, and highlights the fact that financialization entails contextually-specific practices that can lead to uneven and unexpected market outcomes.  相似文献   

从权力理论视角解读“开心农场”的兴起     

朱青 《绵阳师范学院学报》2012,31(12):144-146

"开心农场"作为近年来出现的一款网络游戏,其兴起的原因有多种解释和猜测,笔者受福柯权力理论的启示和影响,发现"开心农场"的出现是一种网络虚拟权力暂时取代了现实权力的结果,它赋予了现代人"种菜者"和"偷菜者"的双重新身份,迎合了社会大众在现代急剧变化的环境之中寻求归属感和满足感的心理需求,一定程度上改善了人们之间的关系。  相似文献   

江苏省发展农产品供应链的SWOT分析及对策研究     

姜方桃  张小敏  何晶  董晶晶 《金陵科技学院学报(社会科学版)》2012,26(1):19-22

＂三农问题＂是我省经济与社会发展中需要解决的重大问题。要解决好这个问题,改善农民的生活,农业产业化经营是一条有效途径。根据农产品供应链的特殊性,运用SWOT分析法,指出江苏省发展农产品供应链存在的优势、劣势以及所面对的机遇与威胁,并在此基础上,进行发展农产品供应链的对策研究。  相似文献   

从农家乐到都市农庄：探讨云南休闲农业的发展趋势     

张红喜  马克禄 《职大学报》2013,(5):44-48

都市农庄在20世纪80年代开始出现,它最早起源于经济发达国家,如今在我国也得到迅猛发展.文章从云南农家乐的兴起、繁荣发展到问题渐现,再到昆明都市农庄的大手笔建设,研究云南休闲农业从农家乐到都市农庄的发展历程,探明了云南休闲农业的发展趋势,对整个西南地区都市农庄建设、休闲农业旅游发展都具有借鉴意义.  相似文献