共查询到20条相似文献，搜索用时 109 毫秒
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在盘锦稻作区推广稻谷干燥机械化技术是个新课题。水稻生产的机械化,除育苗和插秧等种植环节外,还应包括谷物干燥机械化这最后的一"化",才能称之为"全程机械化"。本文就这一新课题进行可行性研究,以飨业界参考。 相似文献
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稻米是国人的主食 ,也是广东省最主要的粮食作物 ,其产量丰欠与品质优劣 ,与农民增收以及农村经济发展关系密切。因此 ,省政府在推广农业机械化的政策上 ,将水稻生产机械化列为优先发展对象 ,并明确提出２０１０年全省基本实现水稻生产机械化的大目标。稻谷干燥机械化是水稻生产机械化过程中重要的环节之一。目前我省的稻谷干燥可以说是水稻生产过程中较薄弱的环节。据统计 ,我省稻谷干燥机械化率不到１ % ,远低于浙江、江苏等省 ,每年稻谷收获时节 ,国道、省道往往成为农民的晒谷场。望天晒谷有很多不便 ,首先要消耗大量的劳动力 ,最主要的… 相似文献
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跳出误区推广干燥技术不容缓 总被引：2，自引：0，他引：2
一、推广机械干燥技术是提高水稻生产效益的必经之路 收获后的稻谷在1h之内立即进行干燥,与放置5h、10h、20h甚至数日再进行干燥,其米质都不一样。在日本,含水率24％的稻谷放置10h以后再进行机械干燥,就只能作为饲料粮。日本和我国台湾省谷物干燥机械化都已达到95％以上,台湾省的米价是我们的五六倍,日本的米价更高于我们10倍,甚至高出100倍。江苏省盱眙县三河农场因为率先使用机械干燥稻谷,加工大米特供武汉 相似文献
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稻谷流化干燥原理及应用 总被引：2，自引：0，他引：2
稻谷干燥的机型有多种,根据干燥方法分为平床式通风干燥、多级顺流式干燥、横流循环式干燥、流化干燥等。日本、韩国及我国南方和台湾地区较多应用的是横流循环式干燥机,如日本金子循环干燥机和广东省农机研究所研制的GXG型谷物循环干燥机及台湾三久循环干燥机等均属此类。它采用低温大风量、薄层多通道、短时间干燥、长时间缓苏的干燥方法烘干稻谷 烘后稻谷质量较好 爆腰率和 相似文献
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稻谷收获、干燥和仓储节粮减损技术Technology of saving grain and reducing loss for paddy harvesting, drying and storage 潘保利、潘久君 
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下载免费PDF全文 稻谷收获、干燥和储藏是收获后处理的三个重要环节,是粮食安全生产的重要国策,这三个环节不是独立事项,互有关联,前者影响后者。在实际生产中很多生产者不在最佳时期收获水稻,少部分割晒提早收获,大部分为好脱粒而在完熟初期后期收获,北方还有在下霜后收获；南方稻谷干燥前在场地上堆放,时间一长就会霉变和腐烂；稻谷常温通风储藏,高温高湿天气易使仓内稻谷发热、结顶、病虫害等。这些传统的方式都会不同程度的造成稻谷损失和营养损失。所以本文重点对我国稻谷收获、干燥和储藏三个环节的现存问题和节粮减损的具体措施,提出新的科学合理的建议和方法,供研究探讨和逐步实施,以促进三个生产环节的技术进步,使稻谷的损失降至最小。 相似文献
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在《江苏农机化》杂志2006年第4期的一篇关于江苏农机化调查分析的文章中谈到,油菜主要作业环节机械化程度接近30%,但播种和收获机械化程度还不到1%。这种对农作物生产机械化程度评价,整体与部分的矛盾现象,着实令人费解。究竟如何评价和确定农业机械化的程度、发展阶段等问题,仍然值得人们思考和探讨。1我国是一个经营多种类农作物的农业大国,主要的三大类谷类作物稻谷、玉米、小麦)中只基本解决了小麦的机械化问题,稻谷、玉米的机械化还只能是刚刚开始。2005年全国稻谷种植机械化程度仅为7.14%,收获机械化程度为33.50%。就是说,稻谷92.86%… 相似文献
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Overland water and salt flows in a set of rice paddies 总被引：1，自引：0，他引：1
E. Playn O. Prez-Coveta A. Martínez-Cob J. Herrero P. García-Navarro B. Latorre P. Brufau J. Garcs 《Agricultural Water Management》2008,95(6):645-658
Cultivation of paddy rice in semiarid areas of the world faces problems related to water scarcity. This paper aims at characterizing water use in a set of paddies located in the central Ebro basin of Spain using experimentation and computer simulation. A commercial field with six interconnected paddies, with a total area of 5.31 ha, was instrumented to measure discharge and water quality at the inflow and at the runoff outlet. The soil was classified as a Typic Calcixerept, and was characterized by a mild salinity (2.5 dS m−1) and an infiltration rate of 5.8 mm day−1. The evolution of flow depth at all paddies was recorded. Data from the 2002 rice-growing season was elaborated using a mass balance approach to estimate the infiltration rate and the evolution of discharge between paddies. Seasonal crop evapotranspiration, estimated with the surface renewal method, was 731 mm (5.1 mm day−1), very similar to that of other summer cereals grown in the area, like corn. The irrigation input was 1874 mm, deep percolation was 830 mm and surface runoff was 372 mm. Irrigation efficiency was estimated as 41%. The quality of surface runoff water was slightly degraded due to evapoconcentration and to the contact with the soil. During the period 2001–2003, the electrical conductivity of surface runoff water was 54% higher than that of irrigation water. However, the runoff water was suitable for irrigation. A mechanistic mass balance model of inter-paddy water flow permitted to conclude that improvements in irrigation efficiency cannot be easily obtained in the experimental conditions. Since deep percolation losses more than double surface runoff losses, a reduction in irrigation discharge would not have much room for efficiency improvement. Simulations also showed that rice irrigation performance was not negatively affected by the fluctuating inflow hydrograph. These hydrographs are typical of turnouts located at the tail end of tertiary irrigation ditches. In fact, these are the sites where rice has been historically cultivated in the study area, since local soils are often saline-sodic and can only grow paddy rice taking advantage of the low salinity of the irrigation water. The low infiltration rate characteristic of these saline-sodic soils (an experimental value of 3.2 mm day−1 was obtained) combined with a reduced irrigation discharge resulted in a simulated irrigation efficiency of 60%. Paddy rice irrigation efficiency can attain reasonable values in the local saline-sodic soils, where the infiltration rate is clearly smaller than the average daily rice evapotranspiration. 相似文献
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车用发动机润滑油失效规律与更换周期研究 总被引：7，自引：0，他引：7
研究在正常使用条件下１０Ｗ／３０－ＱＣ级润滑油用于某型车用发动机时所表现的失效规律,确认期服从两参数Ｗｅｉｂｕｌｌ分布,并给出分布的尺度参数η和形状参数ｍ之最佳线性无偏估计（ＢＬＵＥ）同时,还为定量分析,计算车用发动机润滑油的使用可靠性和合理确定其更换周期提供了一套可供借鉴的方法,并给出了具体的计算实例。 相似文献
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赵国杰 《农业机械化与电气化》2011,(4):106-107
乡（镇）农技推广体系是农业发展的关键。介绍朝阳市农业技术推广体系的现状,针对目前体制及运行机制、服务手段等方面存在的问题,提出适合朝阳市乡（镇）农技推广体系改革与发展的对策,以期对全省农技推广体系改革和发展起到一些借鉴作用。 相似文献
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苑庆刚 《农业机械化与电气化》2010,(3):52-54
草莓果味酸甜爽口,营养价值高,为人们所喜爱的应市鲜果之一。由于草莓易受损伤和微生物侵染,因此其采收、贮藏过程极为重要。介绍草莓采收过程中的注意事项以及11种贮藏保鲜技术的实施步骤和操作方法,推介9种加工方式,为草莓产业化提供技术支持。 相似文献
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对引进的谷子新品种金谷子耐旱TG118进行品种比较试验和多点试种。结果表明：该品种抗旱、耐瘠、适应性强,稳产、高产、抗病抗风抗倒伏强,品质优良,粮草兼用,种植简单,省工易管;一般产量在6000kg/hm2以上,比当地主栽品种增产20%以上。最高产量达9450kg/hm2,适于在辽西北地区推广应用。 相似文献
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对《种子法》存在问题的探讨 总被引：1，自引：0，他引：1
李鹏 《农业机械化与电气化》2011,(6):129-130
《种子法》是我国种植业第一部法律。自实施以来,为依法加强种子管理提供了有力的法律支撑,促进我国种子产业发生翻天覆地的变化。但随着依法管理工作的深入和种子产业的快速发展,《种子法》及配套规章的一些问题逐步显现出来。对《种子法》及配套规章存在的问题进行深入分析,对需要进一步补充的章节以及需要调整的内容进行深入探讨,以求更加完善和明确。 相似文献
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瓦房店市是我国重要的水果生产基地,在国内水果生产领域占有重要地位。随着水果市场化的不断深入,如何满足和适应国内外市场需求成为瓦房店市水果生产的关键问题。从瓦房店市水果生产实际出发,阐述了实施水果生产标准化的必要性,提出了发展水果生产标准化的具体措施。 相似文献
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在新世纪,面对机遇和挑战,党的十六大把“社会更加和谐”作为全面建设更高水平的小康社会的一个重要目标。中国人素有社会和谐的理想;西方人自古也向往社会和谐;借鉴东西方两种和谐社会思想的经验、教训,构建社会主义和谐社会理论。 相似文献
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About 30 years have passed since the Government of Egypt embarked on implementing a series of large scale drainage projects. At present, about 3.8 million acres have been provided with drainage systems on the basis of systematic pre-drainage investigations and designs. The target is to provide drains in approximately 6.4 million acres in the Nile Valley and Delta.The implementation of the subsurface drainage system is carried out by the public sector and private contractors under direct supervision of governmental regional departments. The implementation process depends on many factors related to the drainage material, machinery, manpower, site requirements, farmers and organizations involved. Problems and constraints are sometimes challenging, however, the annual rate of implementation has gradually increased to 170,000 acre/year.This paper discusses the different aspects involved in the implementation process of drainage systems. The development in materials, machinery and construction technologies will be reviewed. Institutional and management factors are going to be also considered. 相似文献