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蓝莓贮藏保鲜技术研究综述 总被引:2,自引:1,他引:1
对蓝莓采后病害和致病病原菌及有关蓝莓贮藏保鲜技术的研究进展,如低温贮藏、气调贮藏、高压静电场保鲜、辐照保鲜、壳聚糖保鲜技术、化学保鲜技术、包装方式、生物保鲜剂保鲜、植物提取液保鲜,以及其他保鲜技术进行了综述,并对蓝莓贮藏保鲜技术的发展趋势进行了展望。 相似文献
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杨梅保鲜技术研究进展 总被引:1,自引:0,他引:1
基于当前杨梅的市场销售形势及对保鲜技术的需求,阐述目前杨梅保鲜技术的研究进展,包括表面覆盖喷涂技术、特殊包装保鲜技术、树上喷洒技术、超压保鲜技术等方面内容,以为推广高效、实用的保鲜技术提供参考。 相似文献
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综述了近年来杨梅采摘后的保鲜新方法与技术,主要包括保鲜剂保鲜、涂膜保鲜、物理保鲜技术等方面内容,并阐述了杨梅保鲜未来的发展趋势与前景,以期为杨梅保鲜提供参考。 相似文献
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Huston M 《Science (New York, N.Y.)》1993,262(5140):1676-1680
Terrestrial biological diversity is supported by solar energy captured by plants growing in soil. This soil-based plant productivity also provides the foundation for human societies through production of food and renewable forms of energy. Variations in plant productivity, resulting from differences in inherent soil fertility, variations in climate and weather, and differences in chemical inputs and agricultural practices, produce patterns of biological diversity that are associated with the agricultural component of economic productivity. Ecological processes lead to a generally negative relation between the diversity of plant species and potential agricultural productivity at both local and global scales. One implication of this negative relation is that preservation of areas of high plant biodiversity does not require the sacrifice of productive agricultural lands. 相似文献
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我国可持续食物安全的实证研究 总被引:19,自引:0,他引:19
分析了可持续食物安全的基本内涵,建立了可量化的我国可持续食物评价指标体系,并对我国可持续食物安全的基本状况进行了实证研究。研究结果表明:我国食物安全的水平,质量和可靠性一直稳定提高,并基本处于安全状态,可持续性和公平性则出现波动和下降的趋势,我国食物安全下一步的目标主要是提高农产品质量和效益,提高农民收入,储备农业生产能力,保护农业资源和生态环境,发展持续农业,这是我国未来否实现可持续食物安全的根本。 相似文献
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结合宁夏农业发展的实际,有针对性地分析了大力发展旱作节水农业对解决水资源短缺、保障粮食安全、促进生态建设及发展农业产业化的重要意义。通过大力扶持推广以秋季覆膜、早春覆膜、全膜覆盖为主的覆膜保墒集雨补灌旱作节水农业技术,抗旱节水和增产增收效果明显,产生了很好的经济、社会和生态效益,真正实现了由被动抗旱向主动调整的转变,由传统种植向特色优势产业发展的转变,走出了一条具有宁夏特色的抗旱节水之路,成效显著。在总结发展经验基础上,明确提出了要完善“两个体系”,实现“三个提高”,进一步扩大覆膜保墒集雨补灌旱作节水技术推广面积,大力发展设施农业、扬黄水延伸高效补灌农业和特色优势作物种植,有效增加旱作区农民的经济收入等“十二五”宁夏旱作农业发展思路及目标。 相似文献
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随着科技的进步,龙江的的发展,黑龙江的农业生产接近现代化农业标准,农业装备水平也已达到全国领先水平,优质农业也得到了快速发展,有机食品、绿色食品、无公害食品的种植面积不断增加、产品质量不断上升。如何发展好有机产业,将是振兴龙江的必经之路。现对黑龙江有机食品发展现状进行了研究,分析了黑龙江有机食品现有销售渠道,提出对有机食品发展的建议。 相似文献
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A short time ago the idea of sustainable agriculture was accepted only at the extreme margins of the U. S. agricultural systems. Although sustainability has now become a major theme of many U. S. agricultural groups, there remains much under-explored terrain in the meaning of sustainable agriculture. A thorough examination of who and what we want to sustain and how we can sustain them is critical if sustainable agriculture is to be a practical improvement over conventional agriculture. In order to begin this effort, this article analyzes contemporary sustainable agriculture discourse and suggests alternatives for reconceptualizing sustainable agriculture. In particular we look at three arenas of sustainable discourse—family farm/rural community preservation, food safety, and agricultural science—and address issues of class, race/ethnicity, and gender found in current sustainability positions. We find that while advocates of sustainability have succeeded in pushing agricultural researchers and policy makers to address environmental issues, we need to go much farther both in theory and practice in order to deal with equally important issues of social equity.Patricia Allen is senior analyst with the Agroecology Program at the University of California, Santa Cruz. Her work concentrates on the political economic aspects of sustainability issues in food and agricultural systems. Her edited book,Food for the Future: Conditions and Contradictions of Sustainability, will be published this spring by John Wiley & Sons. 相似文献
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农地保护的外部效益是农地保护补偿政策制定的依据.对外部效益进行了理论界定和实证测算,认为农地保护的外部效益是农村集体和农地使用者以外个体从农地保护中得到的收益,通常是非市场收益,对其测算应区分外部效益的内部(外部效益发出者)和外部(外部效益接受者),并确定外部区域的范围.实证利用选择实验模型对武汉市5个区域进行了支付意愿测算,在内外部划分的基础上估算了武汉市农地保护的外部效益并比较了不同方法下外部效益测算结果的差别.结果表明,武汉市耕地、园地、林地和农村水面的外部效益分别为30773.2,653860.0,119267.0和82472.7元/hm2;用行政区域直接代替外部性影响区域的做法会使耕地外部效益的测算结果偏高,也会造成园地、林地和农村水面测算的误差,为避免这类误差,外部性测算及相关补偿、税费政策应考虑内外部区域的划分. 相似文献
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