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Peter Griggs 《The Australian geographer》2002,33(1):43-61
The growing of tobacco was one of the most tightly regulated industries in Australia, until deregulation in 1995. Commonwealth regulations controlled the area cultivated with tobacco, the number of growers (i.e. quota holders) and marketing arrangements for tobacco leaf. This paper begins by outlining the nature and historical development of controls in the tobacco-growing industry, and discusses how the Commonwealth government removed the industry's regulatory and protective framework in 1995. The third part of the paper examines how deregulation has impacted upon the Mareeba-Dimbulah Irrigation Area, Far North Queensland, where small farmers produced 60 per cent of Australia's tobacco in 1995. The discussion will show that the agricultural landscape once dominated by tobacco has been transformed, as local farmers abandoned growing tobacco in favour of sugar cane, avocadoes, mangoes, macadamia nuts and other small vegetable crops (e.g. navy beans, pumpkins). Tobacco, once promoted by the Queensland government as a crop to facilitate closer settlement in the Mareeba-Dimbulah Irrigation Area, will have almost vanished from the landscape by 2002. 相似文献
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通过对商丘市1986—2000年烟草花叶病发病资料和气象资料的分析，找出了影响商丘市烟草花叶病发病的气象因子，并应用模糊数学原理建立了预报方程，在实际预报工作中应用效果较好。 相似文献
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用云南93个烤烟种植县气象站1961—2010年4—9月逐日平均气温、逐日最低气温,逐月平均气温,平均最低气温资料结合各类型烤烟低温冷害指标,基于概率和强度结合权重指数,计算了各烤烟种植县的春季、夏季、秋初和全生育期综合低温冷害风险指数。使用低温冷害风险指数与海拔、纬度因子建立的空间推算回归模型,在ArcGIS 9.3平台下实现了低温冷害风险指数的空间精细化推算、订正及区划,进一步将其分类为5个风险等级,且对区划结果进行了分析。区划结果可为烤烟生产相关单位提供低温冷害防御的决策依据。 相似文献
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烟草香味是评价烟叶及卷烟感官质量的重要指标。介绍了烟草及烟气中香味物质的分离、分析、鉴定的基本方法和技术以及研究成果,并对形成烟草香味的前体物质进行了探讨。 相似文献
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Impacts of the forces and processes of agricultural restructuring are described in this paper through an analysis of farmers’ ‘lived experience’ in the tobacco sector of Ontario, Canada. The paper argues that the political and economic changes in the 1980s fundamentally altered tobacco farming and the broader rural community. The analysis is based upon a survey of farmers and former farmers, and includes examples of individual case histories. The results show the ways in which farmers’ well-being was affected and provides insights into coping mechanisms. 相似文献
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用HNO3和HCl消解烟草样本，在pH为4.2的乙酸—乙酸钠介质中，微量硼与铍试剂Ⅲ形成紫红色络合物，方法灵敏度高，简便易掌握，方法检出限为0.04 μg/ml，线性范围为0～0.4 μg/ml，完全能满足烟草中微量硼的测定要求。 相似文献
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烟草香味物质及其形成的前体物质研究进展 总被引：3，自引：0，他引：3
烟草香味是评价烟叶及卷烟感官质量的重要指标。介绍了烟草及烟气中香味物质的分离、分析、鉴定的基本方法和技术以及研究成果，并对形成烟草香味的前体物质进行了探讨。 相似文献
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安福县种植优质烤烟的气候条件分析 总被引：2，自引：1，他引：2
分析了安福县烤烟生产过程中的气象条件，并提出了具体的趋利避害措施，认为要改裸地栽培为地膜覆盖栽培，要适时播种、移栽，实行高垄单行，开好腰沟围沟，实行宽行窄株，合理施肥，才能达到丰产优质的目的，使烤烟种植真正成为安福县农业的支柱产业之一。 相似文献
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针对天水早春气温波动大,寒潮、大风天气多,低温冷害重而育苗成活率低的气候背景,１９９６～１９９８年对烤烟育苗期间,进行适宜气象条件及最佳育苗设施手对比试验研究,得出当地烤烟幼苗健壮生长的最适环境气象条件,同时,也得出了当地烤烟育苗的最佳设计是双膜纸钵大畦与弓棚大畦,以双膜钵大畦最佳。 相似文献
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