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明清时期开封境内的耕作环境与农业发展 被引量:1
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作者 吴小伦 《农业考古》 北大核心 2013年第3期130-134,共5页
明清时期,频繁遭受黄河水患的开封境内沿黄州县的土质相继出现沙化或碱化,耕作环境渐趋恶化,农业发展受到深程度制约。沿黄居民对作物种属的适应性调整和选择虽取得了一定成效,但并未在总体上改变农业发展的颓势。
关键词 明清时期 开封 耕作环境 农业发展
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从不同的耕作环境谈门源小油菜的自身增产潜力
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作者 许存平 王海玲 《青海气象》 1996年第1期33-35,共3页
本文是在"门源小油菜分期播种试验"的基础上,通过对小油菜在不同耕作环境下所表现出的外部形态及产量方面的差异分析,总结阐述了改善小油菜栽培的外部环境可以提高产量的可能。
关键词 小油菜 耕作环境 增产潜力
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耕深测量装置研究与多元线性回归模型预测分析 被引量:3
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作者 王雷 杜治千 +2 位作者 汪凌 刘铭 汪丛 《农机化研究》 北大核心 2023年第6期139-145,共7页
针对耕作环境复杂、旋耕机耕作深度测量作业影响因素多等特点,设计了一种自动化测量、省时省力、精度高的便携式耕深深度测量装置。装置搭载于旋耕机后,通过磁致伸缩位移传感器、超声波传感器、姿态传感器和GPS模块等传感器采集数据,结... 针对耕作环境复杂、旋耕机耕作深度测量作业影响因素多等特点,设计了一种自动化测量、省时省力、精度高的便携式耕深深度测量装置。装置搭载于旋耕机后,通过磁致伸缩位移传感器、超声波传感器、姿态传感器和GPS模块等传感器采集数据,结合装置数学模型,融合相关数据,有效获得准确的耕深数据。对超声波传感器和磁致位移传感器采集的数据进行S-G滤波加权融合,有效应对测量过程中泥土飞溅或越坎等数据波动,减小外在因素对测量精度的影响,提高测量的精度。结合多元线性回归预测模型,对滤波融合后的数据进行预测分析,准确预测耕深数据变化值并辅助旋耕机调整机身姿态。试验结果表明:在3组16cm预定耕深下,磁致位移传感器直接采集的数据可以准确地反映数据的变化和趋势,且超声波传感器数据间接辅助磁致伸缩位移传感器数据,还原数据真实变化趋势。研究结果表明:多元线性回归模型预测数据与实际测量的数据之间的平均绝对百分比误差分别为0.03%、0.26%、3.16%,能准确反映实际旋耕机作业耕深数据情况,实现耕深测量预测。 展开更多
关键词 耕深测量 耕作环境 多元线性回归模型 S-G滤波
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Traditional farming in the mountainous region of Bangladesh and its modifications 被引量:1
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作者 MISBAHUZZAMAN Khaled 《Journal of Mountain Science》 SCIE CSCD 2016年第8期1489-1502,共14页
Shifting cultivation is a traditional farming system practiced in the tropical mountainous areas. Although it has been widely perceived as an economically inefficient and environmentally harmful agricultural productio... Shifting cultivation is a traditional farming system practiced in the tropical mountainous areas. Although it has been widely perceived as an economically inefficient and environmentally harmful agricultural production system, recent science reviews, however, indicate that the deleterious impacts of shifting cultivation on environment may have been overestimated. Despite the pressures of agricultural intensification in areas where shifting cultivation occurs, farmers across the tropics still maintain this traditional farming system. The objective of this study was to explore existing traditional shifting cultivation practices and their various modifications including the innovative farming techniques developed by farmers in the Chittagong Hill Tracts(CHTs), the mountainous region of Bangladesh, and examine their importance with respect to recent socio-economic and environmental changes. The study revealed that shifting cultivation still exists as the most dominant farming method which supports livelihoods and culture of the hill ethnic people. However, demand for more food and household income to meet livelihood needs of an increasing population combined with a rapid deterioration of soil and water quality over decades contributed to development of innovative farming practices through fallow land farming, crop substitution, agroforestry and homestead gardening in the CHTs. Through these farming techniques farmers maintain a strong relationship with traditional knowledge system embedded in the ageold shifting cultivation practices. Today state policies and market forces act in favor of replacement of traditional farming with intensive cash crop agriculture. It seems that disappearance of traditional farming practices from the hills may threaten local biodiversity and food security. It may be recommended that shifting cultivation should be encouraged in areas where they have potential for contributing to preservation of native biodiversity and ecosystem services, and protection of local peoples' food security and cultural identity. 展开更多
关键词 Shifting cultivation Chittagong HillTracts AGROFORESTRY Food security
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台湾地区有机农业的发展展望及与大陆协同合作发展之具体措施
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作者 侯金日 《海峡科学》 2019年第9期7-12,共6页
有机农业是指基于生态平衡及养分循环原理,不施用化学肥料及化学农药,不使用基因改造生物及其产品,进行农作、森林、水产、畜牧等农产品生产之农业。我国台湾地区自1986年开始发展有机农业,在各项种植奖励措施、生态补贴等推动及有机农... 有机农业是指基于生态平衡及养分循环原理,不施用化学肥料及化学农药,不使用基因改造生物及其产品,进行农作、森林、水产、畜牧等农产品生产之农业。我国台湾地区自1986年开始发展有机农业,在各项种植奖励措施、生态补贴等推动及有机农户持续努力下,每年持续增长,目前种植面积已超过1.2万公顷,占耕地总面积的1.54%。中国大陆有机作物种植面积超过190万公顷,在有机农业栽培与管理上具有先进技术和大面积种植之经验,若能搭配台湾小而美精致化与生态化之有机栽培管理技术和营销渠道创新,将能发挥“1+1>2”之效果。未来两岸在有机栽培技术研发、有机资材开发、生物性肥料研究、有机农田生物多样性与天敌制约技术、有机农业专家交流、举办有机农业研讨会、有机农场参访学习等方面有具体合作的潜力,为两岸有机农业发展,生产健康又安全之有机农产品而努力。 展开更多
关键词 有机农业 友善环境耕作 验证管理 两岸合作
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Exploring Factors Affecting Farmers' Implementation of Wildlife-friendly Farming on Sado Island, Japan 被引量:5
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作者 中村慧 柘植隆宏 +2 位作者 大久保悟 武内和彦 西川潮 《Journal of Resources and Ecology》 CSCD 2014年第4期370-380,共11页
Implementing wildlife-friendly farming (WFF) practices is a sound approach to sustain ecological restoration of farmland. The aims of the study were to explore factors affecting farmers’ implementation of WFF pract... Implementing wildlife-friendly farming (WFF) practices is a sound approach to sustain ecological restoration of farmland. The aims of the study were to explore factors affecting farmers’ implementation of WFF practices on Sado Island, Japan and to consider the policy implications of disseminating such practices. All 5010 farming households on Sado Island, who are distributing rice to Japan Agricultural Cooperatives (JA), were surveyed. In total, 2231 households responded to the questionnaire (response 44.5%). By comparing the attitudes, beliefs, and attributes of non-certiifed versus certiifed farmers, we identiifed key factors affecting farmers’ implementation of WFF practices. Compared with non-certified farmers, certified farmers: (i) showed a greater interest in biodiversity and the ifnancial beneifts of WFF; (i) had a larger number of certiifed farmer friends; (ii) felt many more pressures and expectations from consumers, in particular; and (iv) were not hampered by bad labor or farmland conditions when implementing WFF practices. To further disseminate WFF practices in Sado, we suggest that the information on the effectiveness of WFF on paddy ifeld biodiversity is used in public education, and opportunities for interchanging opinions are set up between non-certiifed and certiifed farmers, as wel as between farmers and consumers. 展开更多
关键词 environmentally friendly farming theory of planned behavior Globally-Important Agricultural HeritageSystems (GIAHS) crested ibis ECO-LABEL
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