浙农113引种无锡试验报告

本文对浙农113引种无锡后的栽培特性、产量、品质等进行了研究。结果表明:浙农113引种无锡后,萌发期较早,产量高,适制扁直型名优绿茶,抗旱、抗寒性强,尤其对春季霜冻抗性较强,抗病虫力高于福鼎大白茶,适宜在江苏省扁平型名优茶生产地区推广种植。     

元宵绿无锡地区引种试验报告

本文对元宵绿引种无锡后的栽培特性、产量、品质等进行了研究。结果表明：元宵绿引种无锡后,采摘期较福鼎大白茶提早20天左右,移栽成活率高,制绿茶品质优,抗逆性强,适宜在无锡及周边名优绿茶生产地区推广种植。     

早生优质绿茶新品种选育

对中茶108(原辐Ⅱ)等6个新品系和中茶102等4个品种分别进行了品比试验和区域试验。品比试验结果表明,新品系中茶108为特早生品系,氨基酸含量高达4.53％,适制绿茶,品质优良,产量比对照福鼎大白茶高67.23％。区域试验结果表明,中茶102为早生品种,氨基酸含量4.46％,适制绿茶,品质优良,产量比对照迎霜高21.68％,生长势旺盛,抗性强。     

优3等5个绿茶新品系比较试验

以福鼎大白茶为对照,对优3、优10、优108、优183、优510等5个绿茶新品系进行布区种植,并对其种植成活率、芽梢性状、物候期、修剪枝叶量、鲜叶产量、制茶品质等进行调查鉴定。结果表明：优108、优510等品系成活率较高;优10、优183树高超过对照,优108树幅比对照宽;优3、优183芽梢密度比对照密;优3、优183芽期比对照早;优10修剪枝叶量重于对照;优3、优10、优108鲜叶产量比对照高;优3绿茶品质较好。     

茶树新品种舒茶早和凫早2号在江北茶区的适应性研究

以福鼎大白茶为对照，对茶树新品种舒茶早、凫早2号在江北茶区信阳区域适应性进行了研究。结果表明，舒茶早发芽期比福鼎大白茶早3～5天，为早生种，生长势强，鲜叶产量显著高于福鼎大白茶，抗性良好，适制绿茶，品质优良，适于信阳茶区及江北茶区推广。凫早2号发芽期比福鼎大白茶略早，为早生种，产量低于对照，抗性强，适制绿茶，品质优异，适于信阳茶区及江北茶区推广。     

丽水绿茶品质评价及评价体系研究

通过对丽水名优绿茶及普通茶品质指标的检测与评价，结果表明春茶优于秋条，名茶优于普通茶丽水茶叶氨基酸、茶多酚含量高，品质优．春茶酚氨比为7．57，秋茶酚氨比15．55，说明丽水春茶适制绿茶，秋条红绿兼可，更适制红茶。建议将春茶制成绿茶名优茶，秋茶制成品牌红茶。通过绿茶感官评价与仪器分析法泮价，两种方法均可作丽水绿茶的评价方法，但第二种评价方法主要用理化检测结果为依据，不受人为㈧素的影响．闪此两种方法兼顾更为科学合理，可作为丽水绿茶量化评价体系的主要内容。     

关于提高我省绿茶品质的技术途径

本文对我省绿茶品质存在的问题及原因进行了分析，强调提高我省绿茶品质的技术途径：一是推广绿茶良种，加快良种茶园的建设；二是栽培着重抓提早春茶开采期和狠抓春茶产量；三是加工工艺着重改善干茶色泽和条索；四是更新陈旧的制茶设备；五是改进贮藏和包装。     

提高松桃扁型名优绿茶品质的技术探讨

松桃翠芽是贵州松桃扁型名优绿茶的代表，其外形扁平，色泽翠绿，汤色清澈，嫩香持久，滋味浓爽，叶底肥嫩，品质优良，属龙井型名茶。品质特点为色、香、味、形俱佳。曾在1994年首届中茶杯全国名优茶评比中荣获一等奖。近年来，松桃扁型名优绿茶发展势头迅猛，产量得到大幅提高，鲜叶由原来的限采到放开采，加工由全手工到全机械。随着加工工艺的改变和市场对“色绿”越来越高的要求，许多生产者在加工扁形茶时偏重色泽而忽视了香、味、形，使松桃翠芽面目全非，名茶不名，出现了人们常说的“名优茶不如大宗茶”的怪现象。笔者现将该县扁型茶出现品质下滑原因及改进方法作一浅析。     

高优炒绿茶的采制技术

为提高绿茶品质,提升档次,增加经济效益,笔者于2005年在绿茶主产区涂坊镇溪源村推广高山名优绿茶采制技术,该村茶叶面积1264亩,2005年制高优茶产量3918公斤,每公斤价平均81元,产值达317.39万元,亩产值2511元。据我县调查统计,2005年全县总产茶840吨,其中绿茶181.6吨,占全县总产     

试论提高我省绿茶品质的技术途径

本文对我省绿茶品质存在的问题及原因进行了分析，并强调了提高我省绿茶品质的技术途径是：一推广绿茶良种，加快良种茶园的建设；二改进栽培技术，茶园管理着重抓提早春茶开采期和春茶产量两方面；三加工工艺着重改善干茶色泽和条索；四更新陈旧的制茶设备；五改进贮藏和包装。     

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.     

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。     

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     

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。     

12份白花泡桐材料亲缘关系的ISSR分析

以‘福桐’、‘绿桐’2个无性系与10个不同种源的白花泡桐个体为研究对象，采用ISSR分子标记对12份白花泡桐材料的亲缘关系进行研究，并利用DPSv3.01进行聚类分析。结果表明：10条引物共扩增出66条条带，其中有37条多态带，多态性比例为56.1%。根据ISSR聚类分析结果，在遗传距离为0.35时，12份白花泡桐材料可分为5类，第1类为‘福桐’无性系与河南、河北种源个体；第2类为‘绿桐’无性系与湖南、湖北、江苏种源个体；第3类为浙江、广东种源个体；第4类为江西、福建种源个体；第5类为广西种源个体。此结果     

龙眼种质资源果实经济性状的稳定性评价

为了探讨龙眼(Dimocarpus longan Lour.)种质果实性状的稳定性,连续3a对40份不同基因型龙眼种质果实数量性状的年际间表现进行测定比较。结果表明,在气候条件差异较大的不同年份,单果重、果皮重、果肉重、种子重、果皮厚、可食率、可溶性固形含量等果实性状均表现丰富的多样性,并存在年际间的显著或极显著水平差异,气候条件对果实数量性状有显著影响;不同性状的稳定性有差异,其中可食率的稳定性最高,其次是可溶性固形物含量。通过聚类分析,可将40份龙眼种质按果实性状稳定性分成7类。