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花生是我国重要的油料作物,葫芦岛市种植花生历史悠久.分析葫芦岛市花生产业的发展现状及优势,并在此基础上针对发展中存在的问题提出对策,以期促进其花生产业的发展. 相似文献
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论述了阜新地区花生种植的优势及产业发展情况,分析了当地花生产业发展存在的问题,提出了促进花生产业的对策,为本区域及主产地的花生产业发展提供有益的借鉴。 相似文献
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花生是辽宁省主要经济作物,发展花生产业是促进农民增收的重要途径之一。对辽宁省花生现代化生产技术进行调查研究,指出当前花生生产中存在的主要问题,并提出相应的解决对策,为今后辽宁花生产业发展提供一定的理论依据。 相似文献
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魔芋产业已经成为发展农业经济的新宠,安康市是我国魔芋种植核心区和优势区.分别从安康市魔芋产业分布现状、产量、种植面积和产值等角度对当地魔芋产业发展现状进行了调查研究.研究发现,安康市魔芋产业具有资源和品质优势,但依然存在优质种芋繁育慢、病虫害问题突出、产品加工创新能力较弱和魔芋生产企业资金紧缺等问题.针对存在的问题提出... 相似文献
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花生是辽宁省主要油料作物之一。分析辽宁省花生产业的自然条件、地域分布、种植品种及科研创新情况,针对花生产业发展中存在的主要问题,提出促进花生产业发展的可行性建议,为加快全省花生产业发展提供借鉴。 相似文献
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针对花生播种、中耕和收获等生产环节用工多、劳动强度大等制约产业发展的突出问题,加快推进花生生产机械化势在必行,特别是在收获环节,机械化收获的比较优势十分显著,适用技术试验推广意义重大。花生大垄双行机械化作业模式采用联合机械收获,可一次性完成挖掘、去土、输送、摘果、分离、清选、集果等作业,减少作业成本,机收摘净率高、破碎率低,能够减少花生收获损失。对实现锦州市乃至辽西地区花生生产产业化、规模化、系列化,真正落实党中央的“三农”政策具有重要现实意义。 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