浅议富硒甘薯的开发与利用

硒是人体必需的微量元素,对人体的健康有着非常重要的作用。功能性富硒食品已成为目前食品研究开发的重点,富硒甘薯作为一种天然营养、保健的食品,开发前景广阔。因此,本文简述了硒对人类健康的重要意义、开发富硒甘薯的实际意义、甘薯硒营养的有关研究以及富硒甘薯的前案展望。     

富硒马铃薯研究进展

综述了富硒马铃薯研究进展概况,包括马铃薯对硒元素的吸收规律、硒肥种类、施肥方法等因素对马铃薯硒含量的影响以及硒肥与马铃薯产量和品质的相关性。介绍了近年申请的马铃薯富硒技术相关专利与规程以及马铃薯块茎硒限量标准与富硒标准。最后展望了富硒马铃薯研究的应用前景,以期为富硒马铃薯的进一步研究提供参考依据。     

富硒灵芝的研究进展

富硒灵芝是以灵芝作为硒的转化载体培养获得的,其兼具灵芝与硒的生物活性,具有很高的药用价值对近年来对富硒灵芝的研究作一综述,包括灵芝的富硒培养、富硒灵芝的生物活性、含硒有效成分的分离和分析以及富硒灵芝产品开发的现状等,并对其研究方向进行了展望、     

植物富硒规律的研究进展

综述富硒植物的种类、富硒能力、植物体内硒的吸收、代谢、积累过程及施硒方法等,为今后富硒作物高效栽培管理及富硒产品开发利用提供参考。     

石台县天然富硒大米产业现状与发展

石台县具有发展天然富硒大米产业的天然富硒资源及优越的生态环境,境内有多个富硒大米生产基地,拥有"大山第一村"、"石台硒米"等多个品牌。由于石台县富硒耕地分布较为分散、富硒大米行业检测标准及市场监管不完善、品牌效应难以发挥,致使产业整体竞争力不强。本文提出加强富硒大米种植与加工技术的研发创新、完善富硒大米地方标准的制定与监管、发展品牌营销战略、"互联网+"富硒水稻等举措,对充分利用富硒资源,促进石台县功能农业转型及带动石台经济稳定增长具有重要意义。     

富硒大豆的研究进展

硒是人体必需微量元素,提高食物中硒元素的含量是增加人体硒营养的主要途径。文章综述了富硒大豆研究进展,包括大豆对硒元素的吸收转化规律,硒肥种类、施肥方法、品种等因素对硒含量的影响,硒肥与大豆品质及产量的相关性等方面。最后展望了富硒大豆的应用前景,为大豆富硒生产发展提供理论依据。     

开发富硒产品，服务补硒工程——桃源县发展富硒产业的几点体会

介绍了桃源县在富硒产品开发方面取得的成就,对发展桃源富硒产业进行了分析,一是坚定开发富硒产品的信心和决心,二是要认真做好分类建基地、抱团闯市场、突出攻质量、始终抓科技等工作,三是通过争取各级领导的重视支持、建设好队伍、搞好服务,保障富硒产品开发工作的顺利进行。     

富硒增产剂在水稻上应用效果研究初报

硒是人体必需的微量元素 ,它具有抗氧化、拮抗有害金属离子、防癌抗癌、维护心血管系统的正常结构和功能、保护视觉器官以及生育繁殖能力等多种生理功能。针对我国大部分地区土壤中硒贫乏、居民硒摄入量严重不足的现状 ,近年来各地纷纷研究开发富硒农产品生产技术。为了研究富硒营养大米生产技术 ,2002年我们在温州、兰溪等地开展了富硒增产剂在水稻上应用效果的研究。一、试验材料和方法1.试验材料选用黑龙江兴农科技责任有限公司生产的葵花牌固体富硒增产剂 ,规格 :100g/袋 ;施用方法 :1袋富硒增产剂加清水20kg充分搅匀后进行叶面喷雾。2.…     

富硒水稻的研究意义与进展

富硒功能水稻具有富硒、优质、保健、防病、安全等特点,从硒与人体健康、硒与水稻生长发育等方面概述了富硒水稻的研究意义,综述了富硒水稻在栽培、育种、遗传等方面的研究现状及存在的问题,提出了富硒稻进一步研究的方向.     

喷施富硒有机肥对茶叶产量及硒含量的影响

试验比较金观音、丹桂和黄旦成龄茶园喷施富硒有机肥对春茶产量和硒含量的影响,结果表明：与喷施清水对照处理同比,3个供试品种喷施富硒有机肥处理的春茶中硒含量均极显著增加,分别为相应对照的44．04、29．21、8．68倍,且都达到中华人民共和国农业行业富硒茶的含硒量标准;鲜叶产量分别为相应对照的106．20％、99．12％...     

豫北优质大豆产业发展策略

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。     

Comparisons of methods of scheduling irrigations of potatoes

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.     

吉林省平安农业科学院大豆所大豆研究工作报告

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     

湖南沅陵4种绿茶品质成分分析

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。     

Analysis of nutritional components of eight famine foods of the Republic of Niger

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.     

防治水稻潜叶蝇的药剂筛选

通过对防治水稻潜叶蝇不同药剂、不同用量的田间对比试验,结果表明,32 g/kg的35%丁硫克百威拌种预防潜叶蝇效果最好,药效可达55 d以上,适宜在生产上推广应用。     

狗牙根诱变后代抗寒性评价

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。     

芦笋枯萎病病原鉴定

对造成福建省漳州市东山县的芦笋枯萎病病原菌进行分子鉴定,以期确定病原菌的属、种名,为防治该病害寻求理论依据。试验对分离纯化的病原菌核糖体DNA的ITS区进行测序,在Genbank中搜索其同源性并构建它们的系统发育树,结果表明：引起芦笋枯萎病的病原菌是镰刀属中的尖孢镰刀菌(Fusarium oxysporum),且病原菌之间的同源性高达89%,遗传差异不显著。