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2007年全国农机化发展数据 总被引：1，自引：0，他引：1
《湖南农机》2008,(1):7
（1）农机装备结构：2007年全国农机总动力达7.6亿kW,比上年增长4.6%。拖拉机保有量1834万台,增长6.1%;其中大中型拖拉机184万台、增长9.7%,大中 型拖拉机配套农具293万台、增长10．7％，小型拖拉机1650万台、增长5．7％。联合收割机61万台，增长7．1％。水稻插秧机、玉米收获机械保持较高的增幅，马铃薯、花生等经济作物和饲料加工机械增速较快，有所改善。 相似文献
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近年来,随着国家强农惠农政策实施力度的加大,我国农机化保持健康发展态势,农机装备总量持续快速增长。据农机部门统计,目前,全国农机总动力逾10亿kW,同比增长5．8％,其中,大型拖拉机保有量预计可达508万台,中型拖拉机保有量预计可达790万台,水稻插秧机、联合收获机预计分别达57．7万台、135万台。 相似文献
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一、农机产品质量现状 江苏省是农机大省,中小马力柴油机、中小型拖拉机,在全国有相当大的影响。至2002年底,农机总动力达到2 983.34万kW,比上年增加25.41万kW;大中型拖拉机保有量达7.46万台(含拖拉机变型运输机),比上年增加1.3万台,小 相似文献
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荆门市地处湖北中部,是全国首批农机化示范市,近几年来在国家购机补贴等一系列惠农政策的推动下,荆门农机保有量和作业水平得到了快速发展。截止2009年底,全市农机总动力达到300多万kW,拖拉机总量达到24．7万台,其中大中型拖拉机1．6万台,联合收割机0．9万台,水稻插秧机0．44万台,机械耕整、收割水平90％以上,机械插秧水平达到30％,农业生产主要环节基本实现了机械化。但是,随着农机保有量的快速增长,农机安全事故也有增加的趋势。 相似文献
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一、我市农机化基本情况
近几年，在国家惠农政策的带动下，我市农机市场逐渐升温，农民购机用机热情明显提高，农机装备水平有了一定的提升。与上年相比，全市农机总动力已达138万kW，增长6．4％；拖拉机保有量18842台，增长10．1％；配套机具13501台，增长19．3％；机具配套比由1：0．66增长到1：0.72，实现了机引农具的增长大于拖拉机增长的目标，装备结构趋于合理。全市机耕地面积220．3万亩，增长2．3％；机播种40．8万亩，增长18．5％，其中水稻机插秧10万亩， 相似文献
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把握重点扎实工作全面推进农业机械化 总被引：3，自引：0，他引：3
一、１９９９年我国农业机械化持续稳定发展(一 )农机装备水平不断提高 ,机械化作业能力进一步增强预计１９９９年底 ,全国农机总动力将达到４ ８亿千瓦 ,比１９９８年增长６ ８ % ;农机固定资产原值达到２６１０亿元 ,增长１０ % ;联合收获机保有量达到２１ ８万台 ,增长约２０% ;拖拉机拥有量１２９５万台 ,增长７ ２ % ,其中大中型拖拉机达到７５万台 ,增长４ ２% ,小型拖拉机达到１２２０万台 ,增长７ ４ % ;拖拉机配套农具达到１７７５万部 ,增长１２ ５ %。农用运输车达到５８３万辆 ,增长１０%。随着农机装备水平的提高 ,全国机械化… 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