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扁形茶炒制机(龙井茶机)是按照扁形茶手工炒制工艺要求、集手工炒制工艺杀青、理杀(压扁)、辉干为一体的多功能茶叶加工机械。因其生产功效高、加工质量稳定等优点而受到广大茶农的青睐和好评。下面就谈谈如何选购和使用扁形茶炒制机。 相似文献
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扁形茶炒制机(龙井茶机)是按照扁形茶手工炒制工艺要求,集杀青、理杀(压扁)、辉干为一体的多功能茶叶加工机械。以其生产功效高,加工质量稳定等优点赢得了广大茶农的青睐和好评。扁形茶炒制机在全国特别是浙江、江苏、江西、福建等省广泛地推广和应用,极大地推动了当地名茶生产机械化,促进了这些地区茶叶产业的优化升级,大大促进了农民增收、新农村建设。 相似文献
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余姚市大岚镇有“高山云雾茶之乡”的美誉,如今茶叶面积已发展到1700hm2左右。为适应生产规模的扩大,降低茶农劳动强度,成功引进了集模拟手工制茶工艺——杀青、理条、辉干为一体的多功能扁形茶炒制机,使得茶叶的炒制也实现了机械化。这种茶机以其生产效率高、加工质量稳定赢得广大茶农的青睐和好评。 相似文献
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“五峰迎春”高级绿茶研制课题,经过连续三年多的试验研究,形成了手工加工和机械加工两套较规范的工艺流程,确定了与成茶品质密切相关的各工艺操作的技术参数,确保在不同加工设备条件下生产的“五峰迎春”独特的风格特征。该茶的品质特征为:外形翠绿匀整,微扁似矛,汤色嫩绿明亮,清香馥郁,滋味清鲜,叶底肥嫩绿明。经农业部茶叶质量监督检测中心检验,其理化、卫生指标符合国家标准,综合评价为“品质全面,质地优良,富有名茶特色。” 相似文献
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安溪县广大农民在长期的茶叶生产实践中,探索和积累了一整套独特的茶叶初制技术和经验,根据不同季节、气候、品种、鲜叶成熟度等,灵活运用"看青做青"和"看天做青"制茶技术,并应用制茶机械设备提高茶叶的品质,力求使茶叶感官品质水平达到最佳效果。 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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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
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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