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2009年5月15日,由苍溪县农机局主办,县政府办、县总工会、县农工委协办的苍溪县“正月杯”机耕作业技能培训暨竞赛活动隆重举行。数十台耕整机加足马力,在田块里欢跃耕作,机声轰隆,泥土飞舞;插秧机插植臂“手”起“手”落,身后秧苗流线成行,绿茵茸茸; 相似文献
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2011年10月18日上午,四川省苍溪县陵江镇胡家梁村一个宽敞的田坝里,彩旗飘飘,人头攒动,机声隆隆,由苍溪县农机局主办、县农机服务协会协办的2011年机耕作业技能竞赛活动在这里隆重举行。来自苍溪县39个乡镇的50名参赛选手参加了比赛,他们平均年龄53岁,最高年龄66岁,最低年龄34岁,60岁以上占32% 相似文献
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2011年10月18日上午,四川省苍溪县陵江镇胡家梁村一个宽敞的田坝里,彩旗飘飘,人头攒动,机声隆隆,由苍溪县农机局主办、县农机服务协会协办的2011年机耕作业技能竞赛活动在这里隆重举行。来自苍溪县39个乡镇的50名参赛选手参加了比赛,他们平均年龄53岁,最高年龄66岁,最低年龄34岁,60岁以上占32%,50岁以 相似文献
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主动赢得三春早──钦州市钦南区机耕见闻钟钦明“江南二月春来早,家家户户种田忙”。虽是阴雨连绵,春寒料峭,我们随钦南区农机春耕检查组下乡,一只见钦南区广阔的田野里却春意盎然,绿野田间人来车往,机声隆隆,一片繁忙。送肥的、开垄的、插秧的、机耕办田的“铁牛... 相似文献
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7月19日上午,位于吉泰盆地105国道旁的江西省新干县溧江乡王山村千亩稻田里机声隆隆,到处可见联合收割机、拖拉机在田间穿梭作业,柴油机组抽出的水欢快地奔向地里……,好一派农机抢收抢种的劳动景象。 相似文献
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新春伊始,春潮涌动。在河北农哈哈机械集团有限公司,繁忙的车间,机声隆隆;如流的车辆,进进出出;一批批员工,市场出征;一项项举措,雷厉风行。牛年牛劲的农哈哈人,借助国家政策东风,利用农机化大好形势,以智慧的谋略、辛勤的汗水,脚踏实地,创造出一个个传奇。 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