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海南省农村沼气建设的发展思路和对策 总被引：3，自引：0，他引：3
随着海南省农业进入新的发展阶段,农村沼气对促进农业增效、农民增收、农村经济持续发展、保护生态环境所起的作用日益突出,产生了良好的综合效益.近年来,党中央、国务院、省委、省政府对农村沼气建设十分重视.2002年中央2号文件明确提出:"加大农业基本建设投资力度,重点支持农村沼气等项目",并把农村沼气建设列入"六小工程",作为加强农村基础建设大事长期来抓.为进一步贯彻落实中央和省有关文件精神,迎接全省农村沼气建设高潮的到来,特提出海南省农村沼气建设发展思路和对策如下: 相似文献
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通过农村沼气建设的实践，阐述了发展农村沼气并开展综合利用是农业增效、农民增收的有效途径，证明发展农村沼气可以实现家居温暖清洁化、庭院经济高效化和农业生产无害化，是建设社会主义新农村的有效途径之一。 相似文献
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沼气技术对减少农村畜禽粪便污染的作用 总被引：1，自引：0，他引：1
随着近年来我国农村经济的不断发展,农村的生态环境也在不断的恶化.生态破坏、农业生产污染以及食品污染引发的安全问题经过长期积累正逐步暴露出来,已经严重影响我国生态农业的建设和新农村建设的发展.本文通过对畜禽粪便沼气发酵前后的分析、对比,来说明农村户用沼气和大中型沼气工程对畜禽粪便的有效处理,指出发展沼气建设对解决农村大气、土壤、地表水、地下水和人居环境污染严重等问题的现实意义以及对新农村建设、保护农村生态环境的重要作用. 相似文献
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生态家园中沼气发酵产物的综合利用 总被引：9，自引：0，他引：9
根据我国农业结构调整、农场城镇化建设、农业增效、职工增收和生态环境建设这一战略重点,沿着生态家园富民计划这条主线,提高沼气在农村能源结构中的比重,把实施沼气综合利用技术作为解决"三农"问题的重要措施.为此,对沼气、沼液、沼渣的综合利用进行了分析. 相似文献
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阐述了农村沼气建设对促进农业增效、农民增收、农村经济持续发展、保护生态环境所起到的越来越重要的作用。提出了在新的形势下，为迎接农村沼气建设高潮的到来，大同市农村沼气建设发展的思路和对策。 相似文献
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农村沼气建设是一项利国利民的惠民工程,是建设社会主义新农村的重要内容之一,本文立足于南充市高坪区大力发展农村户用沼气建设,分析有效利用沼气能源,大力发展生态循环农业过程中的重要意义,并在此基础上寻找与探析我区农村沼气建设,推进我区沼气建设的发展。 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