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沼肥在葡萄上的应用试验 总被引:2,自引:0,他引:2
《农业科技与装备》2015,(4)
随着农村沼气事业的大力发展,沼肥的应用及推广日渐得到重视。将沼肥应用于葡萄生产中,对比纯沼肥区、沼肥化肥混合区及对照区的葡萄枝叶生长情况、植株抗逆性、产量及品质。结果表明:纯沼肥区和沼肥化肥区的枝叶生长好,植株抗逆能力强,产量稍高,且口感较好。建议沼肥施用量为2 000 kg/667 m2,同时配以少量化肥,以保证葡萄产量及品质。 相似文献
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利用沼肥改造低产茶园提高产品质量韩文新(甘肃省康县沼气站746500)为了探索沼肥施用于茶园的增产效果与利用沼肥改造我县低产茶园的最新措施,从1994年5月开始,我站在全县茶叶主要产地之一——阳坝镇老庄村修建了15口小型高效“三结合”沼气池,作为康南... 相似文献
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柑桔施用沼肥丰产和沼气贮藏保鲜技术操作要点刘东飙,何楚碧,潘立章(湖南省益阳市农村能源办)沼肥是各种有机物质通过厌氧发酵后的沉渣和液体。不但N、P、K等营养成分保存完好,相对富集,而且还含有大量的有机质、多种氨基酸、维生素、激素和微量元素,且沼肥腐熟... 相似文献
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分别作沼肥浸种旱床育秧和常规浸种旱床育秧等四组对比试验,结果沼肥组的秧贡素质明显优于常规组,沼肥组的秧苗株高、茎粗、叶片多、叶宽、叶色浓、根系发达、病害率低,产量比常规组增加9.8%。 相似文献
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试验研究了沼肥和化肥配合施用对玉米产量及防病效果的影响.结果表明:与沼肥单施相比,沼肥与化肥合理配施对玉米有明显的增产效果,增产幅度可达20.26%.另外,施用沼肥对玉米根腐病具有良好的防治效果,且随着沼肥施用量的增加防治效果增强. 相似文献
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我国沼气产业快速发展,由此产生了大量沼液沼渣,若不能及时消纳,将会对环境造成二次污染。大力推广沼肥可以缓解长期过量施用化肥对生态环境造成的不良影响。基于演化博弈理论,该研究根据沼肥推广过程中涉及的主体,构建了政府、沼气工程企业和农户三方演化博弈模型,试图研究在沼肥推广过程中3个主体之间的互动机制,通过博弈分析得出该模型的演化稳定策略。该模型的演化稳定策略为(1,1,1),即政府大力支持沼肥推广,沼气工程企业投资沼肥生产项目,农户选择沼肥是演化稳定策略。结果表明,在沼肥的推广过程中,政府、沼气工程企业和农户的决策行为相互影响,任意一方的演化策略会同时受到其他两方主体演化策略的影响。政府相关政策的实施、沼气工程企业投资沼肥生产项目,需要考虑农户对沼肥的接受程度。农户对沼肥的选择意愿也与政府和沼气工程企业对沼肥的推广程度以及扶持力度有关。该研究结论可以为我国沼肥推广提供参考。 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