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近年来,紫菜采收面临劳动力日趋紧缺、人工作业成本攀升、安全隐患频繁显现的困境。用机械采收逐步替代人工采收已成为紫菜养殖业必须攻克的难题。从200i年起,如东县南通光华水产品有限公司引进日本技术,结合该县滩涂紫菜养殖的实际,潜心研制、开发半浮动筏式栽培紫菜采摘机。 相似文献
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【目的】紫菜生产发展日益规模化、现代化,需要与之匹配更先进的设施设备和技术,以更好满足紫菜的产业化、智能化发展要求。【方法】笔者通过分析国内外紫菜采收装备技术发展现状,发现目前的紫菜采收装备主要分为泵吸式紫菜采收装备技术、剪切式紫菜采收装备技术和打采式紫菜采收装备技术,并从研究紫菜生物力学特性、深化研究采收装备的理论体系、推动采收设施设备和系统实现自动化发展、切实提升采收设备和系统的集约化水平、有效打造紫菜全过程机械化栽培模式等方面进行了紫菜采收设备技术发展展望。【结果】我国在紫菜采收装备技术研发和技术探索方面仍存在不同程度的问题,在未来的发展过程中需要从多个方面协同推进,进一步改进创新设备和技术,动态调整紫菜栽培模式,助推紫菜的产业化、智能化、机械化发展。 相似文献
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紫菜营养丰富,味道鲜美,是我国沿海地区出口创汇的主要产品。鉴于我国紫菜加工落后于生产的局面,在对进口全自动紫菜加工设备进行消化吸收的基础上,开发出国内第一台全自动紫菜加工设备。 1、主要结构与工作原理 全套设备由四台单机和一台主机组成,其结构和工作原理可用下列框图表示 相似文献
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一、前言 紫菜是一种天然的海洋健康食品,含有丰富的蛋白质、碘、磷、钙、铁以及维生素A、B_1、B_2和C。天然食品中,紫菜含碘的功能是促进甲状腺正常分泌,防止血管硬化,增进各器官的发育和新陈代谢。从无污染海洋捞上来的新鲜紫菜,经过漂洗、除杂、挑选分级、超薄成片干燥、调味、再干燥、分切包装和大袋包装等工序,加工成速食紫菜袋装制品。 本文主要介绍速食紫菜生产线中的QB— 相似文献
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针对废旧滴灌带回收主要依靠人工捡拾,劳动强度大、效率低等问题,设计了一种滴灌带回收装置,主要由收卷器、翻转机构、抖草机构、传动机构、锁紧装置和机架等组成,通过收卷器对滴灌带进行收卷回收,翻转机构对滴灌带上附着的泥块及杂草进行抖动,可适用于不同作物收获后滴灌带的回收作业。该研究可为废旧滴灌带回收装置的设计提供参考并奠定基础。 相似文献
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为强化海洋经济支柱产业地位,有效解决由于紫菜加工机械化水平低而形成的制约农业和农村经济发展的“瓶颈”问题,近日,浙江象山县农机局在鹤浦镇召开了紫菜烘干加工现场会。推广新产品小型多功能紫菜烘干机。来自全县各镇乡的农(渔)业副乡(镇)长、农机站长和紫菜养殖大户60余人观看了紫菜烘干机加工现场。对这种紫菜加工的好帮手钟爱不已。 相似文献
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针对水稻育苗大棚的卷膜和放膜主要靠人工手动操作完成的现实问题,研制智能温控通风装置。介绍温控器智能控制卷膜器开闭风口的原理及方法,详述智能温控通风装置主要部件的原理、组成及特点,为水稻秧苗生长创造适宜的生长环境。 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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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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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