Understanding the decline of water storage across the Ramser-Lake Naivasha using satellite-based methods     

《Advances in water resources》2013

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冬季花卉无土育苗栽培生产技术试验   总被引：1，自引：0，他引：1  

许彦平  姚晓红  秘晓东  李建国 《干旱气象》2003,21(1):28-30,43

通过有采暖设施日光温室相同基质不同育苗设施花卉扦插育苗和相同育苗设施有机生态基质与营养土基质花卉扦插育苗试验，得出双膜弓棚大畦营养纸钵育苗设施不仅有显著的增热保温效果，而且较小的昼夜温差相对延续并减少了弓棚内插德根部基质的热量流失，为植物根系生长提供了有效的热量条件。采用冬暖日光温室内套双膜弓棚大畦营养纸钵花卉育苗，使供试花卉扦插至成苗移栽或上盆期缩短45—46d，≥10℃积温减少700—770℃日，扦插成活串提高了6个百分点。  相似文献   

“Value”-chains: Identity, tradition, and Ohio's flori(culture) industry     

Jay D. Gatrell  Neil Reid  Thomas Steiger  Bruce W. Smith  Michael C. Carroll   《Applied geography (Sevenoaks, England)》2009,29(3):346-357

This paper examines the status of the floriculture industry in northwest Ohio, barriers facing firms in this transitioning sector, and strategies to promote industry competitiveness. Specifically, the paper focuses on the business practices of firms and efforts by local policymakers, academics, and business leaders to alter the regional dynamics of the industry vis-à-vis a grassroots “cluster” initiative. Using survey and focus group data, the paper demonstrates that culture, tradition, and shared values are key barriers to change and suggests that local cluster initiatives—like the Maumee Valley Growers—are an effective strategy for overcoming these barriers. From an applied perspective, the paper demonstrates the importance of contextualizing applied geographic research and the potential for geographers to chart, inform, and shape the internal geographies, practices, and trajectories of local actors and industry.  相似文献