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目前,农机科技示范园区如雨后春笋在全国蓬勃发展,2004年以来,南通市已建立市级农机科技示范园区3个,县(市)级农机科技示范园区10个,为当地农民增加收入近1000万元。通过参与农机科技示范园区创建工作,总结出不少好的经验,同时也发现了一些问题,如有的园区建设目标不够明确,有的缺乏科学的规划和管理,有 相似文献
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创建农机科技示范园区是我国农业结构调整后农机推广的一条新型有效途径,如何建设既有示范、推广、培训作用,又有较好的经济效益的农机示范园区,是农机推广工作者的一个新课题。 相似文献
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创建农机科技示范园区,就是要给农民树一个样板。通过园区的建设、经营以及较高的效益,吸引农民照着学、跟着做,使高新技术尽快尽可能多地应用于农业生产。可以说,农机科技示范园区是我国农业结构调整后农机推广的一条新型有效途径。如何建设既有示范、推广、培训作用,又有较好经济效益的农机示范园区是农机推广工作者的一个新课题。 1.农机科技示范园区建设要有代表性 山西省地形复杂,高寒冷凉的山区、起伏的丘陵区、平坦的垣地、盆地各具特色。农业生产也五花八门,有玉米、小麦主产区、有小杂粮生产区、有干鲜水果主 相似文献
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目前,农机科技示范园区如雨后春笋在全国蓬勃发展起来,从2000年开始,我省也加入了创建示范园的行列。通过参与园区建设工作,学到不少好的经验,同时也发现一些问题。如有的园区建设目 相似文献
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同江市地处三江平原,土壤肥沃,全市农机作业综合机械化程度达98%,主栽农作物品种是大豆。大豆每年的种植面积约占全市耕地面积的60%,2009年同江市农机作业标准化工作围绕大豆深窄密耕作技术,在农机科技示范园区进行了科技示范。 相似文献
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正近年来,平罗县农机化中心立足县情,因地制宜,大胆尝试,以建设一个园区带动一片产业,一个产业的发展带动一方农民致富和农村经济发展为工作动力,不断巩固和发展"老"示范园区,开拓和培育"新"示范园区,逐步建立起了多种形式并存的农机科技示范园区,为推广农机新技术新机具奠定了扎实基础,有效地促进了平罗县农业生产机械化的全面发展。一、发展状况在前五年示范园区建设基础上,全县共建立了6个区级规模示范园区,35个县级示范园,覆盖了平罗县13个乡镇。其中,在全县7个乡镇建立保护性耕作示范园区13个(核心示范园区2个、面积4133亩), 相似文献
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阐述了促进农机标准化作业的重要性,分析了影响农机作业标准化建设的因素,指出了建设农机示范园区的作用,提出了加强农机示范园区建设、促进特克斯县农机标准化作业的对策和措施。 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