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近日,国际性的高端学术盛会--"水稻生产机械化技术研讨会"在广东省惠州市成功举办.研讨会上,中外农艺和农机专家围绕我国水稻生产机械化发展的相关方针政策、战略重点的制定、农机农艺的结合、技术路线的选择、机具装备的研发等重大问题进行了充分的交流和讨论.在当前通胀背景下,这次研讨会成果将对加快推进我国水稻生产机械化发展、大力提高水稻产量和生产效率、确保粮食有效供给、平抑物价产生重要积极影响. 相似文献
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水稻是我省种植面积最大、总产量最高的大宗粮食作物。水稻插秧机械化是水稻高产栽培的重要增产技术之一,是推动土地流转、促进规模经营、提高农业经营效益的有效途径,是保障粮食安全的重要举措。为保障粮食生产安全,彻底改变农民种植水稻“三弯腰”,大力推广水稻育插秧机械化技术,推进水稻生产全程机械化进程, 相似文献
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水稻生产全程机械化包括机耕、机插、机收、机械化植保以及机械化烘干等环节.大力推进水稻生产全程机械化发展,有效地解决了传统水稻生产"三弯腰"和农村劳动力紧缺的问题,对提高粮食产量,确保国家粮食生产安全,加速农业生产现代化进程,促进农村经济快速发展具有十分重要的意义. 相似文献
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概括地介绍了水稻生产全程机械化技术,提出了水稻生产全程机械化技术的重点机具选配以及工艺路线,并进行了水稻生产全程机械化技术的效益分析。 相似文献
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介绍了连云港市赣榆区水稻生产机械化现状。分析了水稻生产全程机械化技术特点、技术路线及推广应用模式。 相似文献
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水田耕整地是指对水田耕作层土壤进行加工整理,为水稻秧苗的栽植和生长创造良好土壤条件的耕作技术。介绍黑龙江省水田耕整地机械化技术实施与机具选择要点,为推动水稻生产全程机械化进程和实现水稻高产、优质、高效、持续的生产目标提供参考。 相似文献
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2016年密山市承担了农业部"农业技术试验示范项目—水稻生产全程机械化示范"项目,项目按照实施方案要求,在4个合作社实施,示范面积21 296亩,确定了技术内容、技术路线和技术模式,通过项目的实施,取得了较好的经济效益和社会效益,推动了密山市水稻生产全程机械化发展。 相似文献
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对泰州市姜堰区水稻生产全程机械化现状、薄弱环节及影响因素进行分析,对水稻生产全程机械化的技术应用进行研究,探讨了该地区水稻生产全程机械化的工艺技术路线、农机与农艺结合的关键技术、机械装备选型、机械作业服务方式。 相似文献
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介绍了宁夏回族自治区中卫市水稻机械化生产技术示范推广现状和存在的问题,从实践中总结出水稻机械化生产发展的技术保障就是水稻机械化插秧与育秧必须与水稻种植农艺紧密结合,水稻机械化生产技术大面积示范推广的前提就是在水稻机械化生产示范园区建设辐射带动下,依靠农机作业服务组织和土地流转集约化经营形成规模种植来实现的. 相似文献
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《Journal of Agricultural Engineering Research》1998,69(3):249-254
A model to represent the discolouration of dried powder of carrots as a function of temperature was developed. Two types of carrots, Asian and European, containing large amount of lycopene and β-carotene, respectively, were tested. The dried powder was stored under an atmosphere with O2and at three different temperatures, 5,20 and 35°C. The surface colour of the powder was monitored during storage by a Hunter colour ratioa/b. In the proposed model, the rate of oxidation was assumed to be represented by the product of the fraction of concentration of oxidized pigment at arbitrary time and a specific rate of oxidation of pigment. The rate parameters in the proposed model were calculated by fitting the experimental data with smooth curves by trial and error at the end of the induction period but before discolouration took place. The frequency constant and activation energy, expressing the temperature dependence of the rate parameters, were expressed by the Arrhenius relation. The simulation results of a Hunter colour ratioa/bof dried powder at 25°C showed good agreement with the experimental data, suggesting that the proposed model was effective for the prediction of discolouration of dried powder of both types of carrot. The use of the induction period in the manner described may enable the shelf life of dried powder to be predicted. 相似文献
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感官检验棉花的品级,这是农村常见的一种检测手段.它的一个主要特点就是存在不确定性.这是由于检验员的品级检验水平存在一定的差异,其中有很多因素制约着检验的结果.文章对影响感官检验结果的因素进行了系统的分析. 相似文献
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The fractional outflow rate of water from the rumen, measured as the rate of disappearance of the chromium complex of ethylenediamine tetra-acetic acid, was related to a number of dietary factors. A multiple regression equation was derived which expressed fractional outflow rate as a function of the intakes of dry matter, ash, acid-detergent fibre and crude protein.The data analysed consisted of 243 observations for sheep on 59 diets, including forage, concentrate and mixed diets. The ranges covered by the data were: fractional outflow rate 0.7–3.6 day?1; dry matter intake 560–1400g/day; ash 4–30%, acid-detergent fibre 7–41%, crude protein 5–26 % of dry matter; there were no observations for sheep of less than 34 kg liveweight.The equation accounted for 56·3 % of the total variance. Between-sheep variance could not be calculated for the whole of the data but was undoubtedly substantial since, for a sixth of the data, it was known to account for 38 % of the total variance. 相似文献
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从灾害经济学的角度探讨了城镇供水优化调度的必要性和可能性,认为在缺水不可避免的情况下,对供水进行优化调度可以减小缺水带来的损失,产生较好的减灾效益,特别是可以大大减小严重干旱的灾害效应。并根据水资源的特性,提出了缺水损失的计算模式以及优化调度的原则和方法。 相似文献