共查询到20条相似文献,搜索用时 62 毫秒
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阿克苏地区农业部门围绕棉花生产全程机械化,积极开展机采种植模式试验,推进以精量播种、高效植保、化控、精准施肥、机械采摘、精准农业等技术为主的棉花生产全程机械化示范工作.以推进棉花生产全程机械化为目的,以引进推广成熟的农机装备为支撑,引导和扶持土地承包公司、农机专业合作社,加快农机农艺融合,实现棉花育(选)种、栽培技术、农机装备和棉花生产各环节机械化技术的配套,提升阿克苏地区棉花生产全程机械化作业水平. 相似文献
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<正>2017年10月17日,农业部农机化司、农业部农机推广总站、农业部主要农作物全程机械化推进行动专家指导组棉花专业组在山东省滨州市组织开展了棉花生产全程机械化推进活动。活动期间,进行了机采棉作业演示和耕整地、铺膜播种、中耕施肥、植保化控、残膜回收、秸秆处理等环节的机具展示,交流研讨了解决棉花生产全程机械化薄弱环节思路及技术措施,举办了共建黄河流域棉花生产全程机械化基地签约仪式。来自农业部南京农机化研 相似文献
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《农业装备与车辆工程》2017,(2)
<正>经过11年攻关,新疆农垦科学院院士陈学庚带领的研究团队在国内突破了棉花生产全程机械化农机农艺融合关键技术,率先在国内实现棉花生产全程机械化。研究团队围绕新疆冷凉棉区植棉机械化的关 相似文献
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《农业装备与车辆工程》2017,(3)
<正>从新疆农垦科学院获悉,经过11年艰难攻关,新疆农垦科学院院士陈学庚带领的研究团队,在国内突破了棉花生产全程机械化农机农艺融合关键技术研究,率先在国内实现棉花生产全程机械化。棉花是我国重要的农业生产物资,但劳动力短缺、人均管理定额低、种植成本高制约着棉花产业发展,实现棉花生产全程机械化是突破瓶颈的 相似文献
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<正>近日,农业部发布《关于印发水稻机械化生产技术指导意见的通知》和《关于印发西北内陆棉区棉花机械化生产技术指导意见(试行)的通知》,旨在加强农机农艺融合,推进水稻、棉花生产全程机械化。这两个技术指导意见,与近年相继发布的玉米、小麦、马铃薯、花生、油菜、甘蔗和黄河流域棉区棉花生产机械化技术指导意见,基本构建了我国粮食作物和大宗经济作物机械化生产技术体系。《水稻机械化生产技术指导意见》聚焦推进水稻生产机械化、轻简化、集成化、标准化和规 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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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
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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