共查询到20条相似文献,搜索用时 468 毫秒
1.
2.
3.
农民用水者协会可持续发展的探索 总被引:11,自引:2,他引:11
在总结农民用水者协会实践意义的基础上,重点分析了影响农民用水者协会进一步推广与发展的主要原因,认为:在我国现阶段的各种社会活动中,农民用水者协会所处的弱势地位以及农民文化素质的低下是其主要因素。对农民用水者协会赋予新的内涵,营造更加宽松的环境,对协会组织的正常运转提供法律保障,将有利于协会的可持续发展。 相似文献
4.
漳河灌区农民用水者协会现状调查 总被引:9,自引:2,他引:7
对漳河灌区农民用水者协会运行现状进行了调查和初步分析。总结了组建农民用水者协会以后所取得的成效,指出了存在的问题,并提出了健全农民用水者协会的若干建议。 相似文献
5.
漳河灌区农民用水者协会经验 总被引:5,自引:2,他引:5
自1995年6月16日,漳河灌区第一个农民用水者协会的诞生以来,短短的几年时间内,全灌区已建立农民用水者协会60多个。根据规划,“十五”期间,全灌区80%以上的农民都将组建农民用水者协会。实践证明,灌区内建立具有独立法人地位的农民用水者协会,鼓励并动员起广大农民直接参与灌溉管 相似文献
6.
山东禹城市用水协会的实践与问题 总被引:6,自引:3,他引:3
禹城市自2001年开始在小型灌区成立用水者协会,正处于实践的初期,从运行效果来看,用水者协会(WUA)不但解决了小型灌区的管理维护、农民用水问题,同时还为推行农业节水提供了很好的平台。以禹城市用水者协会的发展过程为例,分析它的初步效益、潜在效益、存在的问题和发展方向,以期为农村小型灌区的改革提供参考。 相似文献
7.
灌区用水者协会是由灌区受益农民自愿参加所组成的灌管理组织,该管理模式我国正在推广应用。在用水者协会的组建中,其规模的大小对今后的运行管理影响较大。通过分析用水者协会规模的影响因素、协会组织的效益与费用,建立了用水者协会的效益与费用函数,提出了用水者协会合理规模的理论与确定方法,并对用水者协会的划分进行了阐述。 相似文献
8.
为了有效解决农民用水者协会运作不规范,末级渠系管护主体缺位,水资源利用效率不高等问题,金塔县通过选点示范,积极探索规范用水者协会的办法和措施,并取得一定的成效,就该县如何规范用水者协会进行了总结,指出了取得的成效及存在的问题.并就协会长效发展提出了一些思考. 相似文献
9.
太湖分灌区用水者协会概况及管理效益评价 总被引:1,自引:0,他引:1
农民用水者协会作为一种新的用水管理模式,在花凉亭灌区太湖分灌区通过试点,效益明显,反响良好,起到了一定的示范作用。水管部门调查认为,农民用水者协会的管理模式在花凉亭灌区及中小型灌区和提灌灌区均可参照推行。 相似文献
10.
分析研究了陕西关中灌区股份合作社(JSC)和农民用水者协会(WUA)两种支斗渠灌溉管理体制改制模式的成效和优缺点,提出在管理站一级建立股份合作社,而在斗渠一级建立用水者协会,即股份合作社和农民用水者协会相结合“JSC十WUA”的改制模式,并提出了相应的改进意见和建议。 相似文献
11.
12.
13.
14.
15.
《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
16.
17.
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
18.
19.
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
20.
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