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<正>黄骅市从2006年开始享受国家和省农业机械补贴,随着国家补贴力度的不断加大,黄骅市农业机械化水平有了显著提高,但随着农业机械数量的大幅增加以及柴油价格的不断上涨,农业机械作业市场的竞争日趋激烈,农机户的作业效益与作业成本不成正比,使农机户经营面临尴尬境地。针对农民朋友"投大资挣小钱"、农业机械作业效益低下等作业中存 相似文献
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2009年1月1日起实施的燃油税改革,油料价格中包含了养路费。就是说,农机户在田间作业,不仅享受不到燃油补贴,还要加付养路费,每吨油料大约增加了1000元作业成本。很明显,燃油税改革给农机户增加了不合理的负担,挫伤了农民和农机户扩大经营规模的积极性,也给农业机械化的发展带来了一定影响。 相似文献
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联合收割机跨区作业好处多。一是加快了麦收进度,缩短了麦收时间,实现了丰产丰收。二是减轻了劳动强度,同时调剂了机械余缺,避免了农民重复购机,节约了资金;三是农机户扩大了作业范围,提高了机械的利用率,在服务中增加了收入。 相似文献
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“农业的根本出路在于机械化”曾经是人们的共识。当个体经营农业取代集体经营农业之时,农机具失去了连片规模作业环境,实行面广量大农机户有效服务的难度增大。当前农机技术资金的保障比过去明显增强,但实际使用成本较高。推广应用高效率的大中型、复合式农机具与农业经营小田块模式的矛盾较大,部分农机具较快增加与耕地面积相对固定的矛盾已经显现,农机具频繁转移作业带来油价等成本上升与作业价格相对低廉的矛盾还难以根本改变。 相似文献
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近几年来,农业机械开辟了农民增收的新渠道。水稻跨区机收使农民得到了数十亿的经济收入,那水稻跨区机插,能不能为农民带来新的经济增长点呢?机插作业市场有多大?它的作业效益和作业成本是多少?购机投资回收周期有多长?2011年我们带着这些问题作了一些探索。 相似文献
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6月22日,自治区农机化管理中心领导把崭新的高性能联合收割机的钥匙,交给灵川县青狮潭镇的购机户易国旺。易国旺高兴地说:“购机补贴政策给我们带来了实惠,我准备与其他购机户一起南北跨区作业,大干一场。”灵川县是广西粮食主产区。今年春,该县成为全国十个之一、广西惟一的“ 相似文献
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当前农民购买大中型现代化农业机械的目的是开展社会化服务,以收回购机成本和赚取利润。但是,在作业供需双方都处于分散经营的情况下,作业信息的沟通存在着严重的瓶颈。浙江省嘉兴市应用现代网络信息技术建立的嘉兴市农机服务信息系统为供需双方搭起了信息沟通的桥梁,实现了农机作业资源的优化配置,为相关行业和地区的农机信息服务提供了有益的借鉴。 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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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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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