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针对干滤泥转光度较高的现象，对石灰乳除渣系统，吸滤系统进行了技术改造，并取得了较好的效果，对降低糖分损失、提高经济效益有一定的作用。 相似文献
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0 前言 不论亚硫酸法糖厂还是碳酸法糖厂 ,石灰乳的使用是不可缺少的 ,它是一种澄清剂。石灰石经过煅烧后成石灰 ,再经用一定量的水或压滤机稀甜水进行消和而得乳浊状液体为石灰乳。生产中石灰石、块煤或焦炭、装量配比、煅烧消和温度控制等原因 ,对石灰乳的质量影响很大 ,使其常带有微小砂石及不溶性杂质 ,这类东西加入蔗汁中后影响中和、饱充操作 ,对工艺指标的完成造成严重影响。为此如何提高石灰乳质量 ,近年来各糖厂都在消和器后增设附属设备如除渣器、螺旋输送器、高频振筛等 ,虽然取得一些效果 ,但不十分理想。1 999～ 2 0 0 0年… 相似文献
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在测量糖厂重要流量参数如混合汁、石灰乳、糖浆、醪液、浓盐酸、浓烧碱等流体的流量时,电磁流量计具有其它流量计无法比拟的优点。本文针对甘蔗糖厂的特点,阐明了在糖厂中如何根据不同情形,正确选择、安装及使用电磁流量计。 相似文献
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文章研究了蔗汁亚硫酸法澄清工艺中石灰的添加方式对澄清效果的影响.结果表明:相对于用石灰乳的方式,石灰以蔗糖钙的方式添加,清汁色值变化不大,但纯度有所提高. 相似文献
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近年来，不少单位和农户购置了6BZ-400型苎麻剥麻机，但因使用方法不当，未能达到如期效果。为了帮助用户正确使用该机，现将使用要点简述如下： 相似文献
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本文分析了当前制种生产上“九二○”、花调灵和增效剂的不同使用浓度和方法的效果，结果表明：一般情况下，单用“九二○”不宜少于１２克用量；喷施花调灵有利于增产，试验各处理中以亩喷３００毫升花调灵产量最高；使用增效剂可节省“九二○”用量６～７克，是一种降低成本、增加效益的好途径。由于不同使用方法的抽穗速度和盛花时间存在差异，因而各种方法应灵活运用。 相似文献
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水稻秧苗直接影响水稻的产量、品质和效益。指出种子休眠期长，吸水量不足，温度不适宜，浸种药剂使用方法不当。壮秧剂与床土混拌不均，播种方法不科学，除草剂使用不合理等都是影响寒地水稻出苗的因素。同时，提出了相应的解决措施。 相似文献
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针对豫北地区的大豆生产现状，从气候、土壤、品种、生态因素及市场需求等方面提出了优质大豆的发展策略与途径。 相似文献
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Irrigation of Netted Gem potatoes was scheduled during three growing seasons by three methods: (a) when plants displayed first visual symptoms of moisture stress, (b) when indicated by a soil moisture budget involving estimated evapotranspiration, and (c) on the basis of tensiometer readings of soil moisture suction. When the tensiometer method of scheduling was used, the mean yields of tubers were 55.0 and 25.8 cwt/acre (6160 and 2890 kg/ha) higher than those obtained with the other two scheduling methods. Methods did not affect the specific gravity of potatoes. Method (a) scheduled irrigations least frequently. Scheduling by the budget method was not always adequate because it was based on the assumption that the crop extracted water from a constant 4 ft (1.2 m) profile from planting to full vegetative growth. In one year the budget method scheduled the first irrigation earlier than necessary and delayed the second irrigation during a critical period of crop growth. From full vegetative cover to harvest the irrigation schedules were alike for both the budget and tensiometer methods. 相似文献
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以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。 相似文献
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1 吉林省平安农业科学院大豆研究工作简介吉林省平安农业科学院大豆研究所 ,设在吉林省长春市西安大路种子大厦内。现有科技人员 6人 ,其中研究员 2人 ,农艺师 2人 ,技术员 2人 ,定向培养研究生 2人。大豆研究所的主要任务是选育稳产、高产、优质及抗病虫大豆新品种 ;同时密切 相似文献
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Sena L.P. VanderJagt D.J. Rivera C. Tsin A.T.C. Muhamadu I. Mahamadou O. Millson M. Pastuszyn A. Glew R.H. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,52(1):17-30
In the western Sahel, indigenous plants become important staples when cereal harvests are inadequate to support populations inhabiting that region of Africa. The purpose of this study was to assess the nutrient content of several of these edible wild plants. The leaves of the following seven plant foods were analyzed: Ziziphus mauritiana, Cerathotheca sesamoides, Moringa oleifera, Leptadenia hastata, Hibiscus sabdarifa, Amaranthus viridi, and Adansonia digitata. The fatty acid, vitamin E, carotenoid, selected mineral and amino acid contents of these plant foods were determined. These same analyses were performed on the fruit of the Adansonia digitata. In quantitative and qualitative terms, Amaranthus viridis was found to be an excellent source of protein. Its amino acid composition compared favorably to that of a World Health Organization (WHO) protein standard. It also contained considerable amounts of the two fatty acids that are essential in humans (linoleic and -linolenic) and a number of minerals including iron, magnesium, calcium and zinc. The leaves of Hibiscus sabdarifa contained an appreciable quantity of protein the composition of which was comparable to the WHO standard. The mineral content of the leaves of this plant was also exceptionally high; noteworthy was its high zinc content. H. sabdarifa also contained significant quantities of the two essential fatty acids. Ziziphus mauritiana was an excellent source of the essential fatty acid linoleic acid and several of the metals including iron, calcium, magnesium and zinc. Its content of other essential nutrients, however, was rather low. In general, Adansonia digitata leaves were nutritionally superior to the fruit of the tree; however, the fruit did contain useful quantities of potassium, phosphorus, zinc and -linolenic acid. The Leptadenia hastata leaves were an especially good source of lutein and -carotene. These data should be useful to the people who inhabit the western Sahel in helping them devise healthy diets during times when cereal staples are in short supply. 相似文献
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通过电解质外渗法和匍匐茎恢复试验对‘阳江’狗牙根及其12个通过形态鉴定选出的坪用价值高且花序密度低的诱变后代进行抗寒性鉴定。电解质外渗法结果表明:诱变后代间的抗寒性具有较大差异,其叶片半致死温度(LT50)的变异范围为-7.6～-0.2℃(最低值与最大值相差7.4℃);参试材料抗寒性由强到弱依次为M18>M4>M26>M28> M22>阳江>M29>M31>M10>M37>M16>M1>M25,其中,有5个诱变后代抗寒性优于亲本,分别是M18、M4、M26、M28、M22。匍匐茎恢复实验结果表明:诱变后代M1、M22、M26、M31、M25在0℃和-5℃低温胁迫后的恢复生长率都高于亲本,恢复能力均优于亲本;M10、M37、M28在-5℃低温胁迫下,恢复生长能力低于亲本,抗寒性相对较弱,M16和M4在0℃和-5℃低温胁迫下,恢复生长率都低于亲本,抗寒性明显弱于亲本。综合2种方法鉴定结果显示:诱变后代M1、M25的恢复能力较强;M4、M28的叶片抗寒性较好,青绿期较长;M22、M18、M26的叶片抗寒性和匍匐茎恢复能力均较强;M29,M31的叶片抗寒性和匍匐茎恢复能力与亲本相似;M10、M16、M37的叶片抗寒性和匍匐茎恢复能力均较弱,整体抗寒性较弱。 相似文献
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