贵州发展普洱茶荣获国际名优产品奖

普洱茶是一种后发酵茶，历史上产在云南思茅地区和西双版纳州一带。以大叶种晒青茶为主要原料。当时，因包装简陋，长途运输，日晒雨淋，到了政治经济中心———普洱而得名。１９８１年，贵州桐梓茶厂厂长樊英寿，经过考察后，以中小叶种炒青茶作原料，成功研制出条索紧结、色泽棕褐、陈香醇和、汤色深红、滋味醇厚、叶底嫩柔的贵州普洱茶。经广东口岸公司审评，商检合格，而且，原料比云南大叶种细嫩，具有陈香与绿茶清香相融合的独特香气。１９９０年年产贵州普洱茶２０００t，出口销往港澳台、南韩、日本、东南亚。加入WT０后，贵州遵义…     

普洱茶茶艺发展的几点思考

普洱茶,即以云南大叶种晒青毛茶为原料,经过后发酵加工而成的散茶和紧压茶。普洱茶历史悠久,陈韵独特,但很多人对普洱茶认识不够,创新普洱茶茶艺以助推普洱茶文化和产业发展势在必行。     

普洱茶中茶多糖与茶多酚降血脂功能比较

现代普洱茶属于黑茶类,是我国云南产特种茶,具有耐贮藏和陈香显著等特点。它是以云南大叶种鲜叶制成的晒青毛茶为原料,经过独特的"渥堆"和"陈化"工序加工而成。     

普洱茶发酵过程中外源接种黄曲霉产毒研究

以云南大叶种晒青茶为原料,接种产毒黄曲霉进行模拟普洱茶发酵试验,并在发酵结束时通过LC-MS/MS法对茶样进行黄曲霉毒素检测,研究普洱茶发酵过程中黄曲霉的生长及产毒情况。结果表明,在普洱茶发酵过程中,接种的黄曲霉能在茶叶中生长繁殖,初期生长较快,但随发酵时间的延长,黄曲霉在茶叶中的生长明显受到抑制,其数量逐渐下降。发酵终止时,未在茶样中检测出黄曲霉毒素。     

拼配技术促进普洱紧压茶(生茶)产品力提升

普洱紧压茶(生茶)是云南特有的地理标志产品,以符合普洱茶产地环境条件的云南大叶种晒青茶为原料,按特定的加工工艺生产,具有独特品质特征的茶叶。笔者经过30余年的云南普洱茶生产加工及产品研发实践,通过本文对普洱紧压茶(生茶))原料晒青毛茶的拼配过程控制因素的分析,可望为生产者在产品研发、产品力提升、品质管控方面提供经验和帮助。     

《地理标志产品普洱茶》正式实施

本刊讯12月1日,《地理标志产品普洱茶》正式实施,其中对普洱茶的界定受到业界广泛的关注。依据《地理标志产品普洱茶》的界定,只有以地理标志保护范围内的云南大叶种晒青茶为原料,并在地理标志保护范围内采用特定的加工工艺制成的才能叫普洱茶。标准     

普洱茶的和谐健康可持续发展之道(上)

本文所指的普洱茶,主要指云南普洱茶,普洱茶几乎成了云南茶叶的代名词,因为云南具有得天独厚的宜普洱茶产制环境,香港等主销普洱茶的市场,认为云南普洱茶是"正宗的普洱茶"。至于云南省以外广义的普洱茶,包含了广东、广西、海南、贵州、四川等省(区),乃至用越南,缅甸,泰国等地青毛茶加工改制的普洱茶。现时有关普洱茶的文章很多,本文在探讨中力求加强针对性、实用性、前瞻性,对普洱茶和谐健康,可持续发展提供看法和意见。     

普洱茶的和谐健康可持续发展之道(下)

本文所指的普洱茶,主要指云南普洱茶,普洱茶几乎成了云南茶叶的代名词,因为云南具有得天独厚的宜普洱茶产制环境,香港等主销普洱茶的市场认为云南普洱茶是"正宗的普洱茶"。至于云南省以外广义的普洱茶,包含了广东、广西、海南、贵州、四川等省(区),乃至用越南,缅甸,泰国等地青毛茶加工改制的普洱茶。现时有关普洱茶的文章很多,本文在探讨中力求加强针对性、实用性、前瞻性,对普洱茶和谐健康,可持续发展提供看法和意见。     

普洱茶漫谈

普洱茶在我国传统的六大茶类中为黑茶类,属于后发酵茶,是采用云南大叶种茶的晒青绿毛茶为主要原料,经“沤堆”、干燥等工序加工而成。普洱茶具有滋味醇厚回甘和独特的陈香,以及具有多种保健功能,越来越受到人们的喜爱。港澳同胞把普洱茶称之为“养生之妙品”,“不可一日无”的保健饮料;而在东南亚、日本和西欧也有美容茶、减肥茶、益寿茶的美称,深受消费者的喜爱。1普洱茶名称的由来云南是世界上茶树的原产地,同时也是普洱茶的故乡,古今中外久负盛名。清朝赵学敏《本草纲目拾遗》写道:“普洱茶出自云南省普洱府,产倚邦、攸乐、革登……六茶…     

不缺争议话题的普洱茶

正普洱茶是云南"当家茶",2016年产量近13万吨。近十多年来,普洱茶一度成为茶叶销售的热点。但随着消费者的理性回归,普洱茶几经沉浮的同时也伴随着出现多个疑惑,一谈起普洱茶好像永远不缺争议的话题。列举几例。一、普洱茶不属于黑茶类?提出这一观点的是云南一位茶叶资深专家,理由是普洱茶是用特定的云南大叶种作原料采用独特工艺制作的,是云南特有的,不同于其他中小叶种制的黑茶,应单列茶类,并受     

Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi

Abstract

Grain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike.     

Allelopathy in Agroecosystems in Spain

Summary

This paper reviews the effects of allelopathic interactions in agroecosystems in Spain on plant physiological activity and their ecological advantages. The phenological stage of growth of donor plants and the effective allelochemicals in the soil solution while studying the role of phenolic compounds were highlighting. Finally possible future prospects and conclusions regarding weed control by allelochemi-cals under integrated crop management strategies are discussed.     

2009年中国稻米市场分析及2010年展望

以翔实的资料对2009年中国稻米生产、消费、进出口、供求平衡、库存、价格走势、购销政策和国际稻米供求等情况进行了全面地分析,对影响2010年稻米市场价格走势的各种因素进行了深入研究,并在此基础上对2010年我国稻米市场价格走势进行了预测,结论是我国稻米价格仍呈上行趋势。     

Advances in Variable Rate Technology Application in Potato in The Netherlands

Precision agriculture is a farming management concept based on observing, measuring and responding to inter- and intra-field variability in crops. In this paper, we focus on responding to intra-field variability in potato crops and analyse variable rate applications (VRAs). We made an overview of potential VRAs in potato crop management in The Netherlands. We identified 13 potential VRAs in potato, ranging from soil tillage to planting to crop care to selective harvest. We ranked them on availability of ‘proof of concept’ and on-farm test results. For five VRAs, we found test results allowing to make a cost-benefit assessment. These five VRAs were as follows: planting, soil herbicide weed control, N side dress, late blight control and haulm killing. They use one of two types of spatial data: soil maps or biomass index maps. Data on costs and savings of the VRAs showed that the investments in VRAs will pay off under practical conditions in The Netherlands. Savings on pesticide use and N-fertilizer use with the VRAs were on average about 25%, which benefits the environment too. We foresee a slow but gradual adoption of VRAs in potato production. More VRAs will become available given ongoing R&D. The perspectives of VRAs in potatoes are discussed.     

我国高粱育种研究进展

对我国高粱育种的主要途径和研究方向进行了概述,针对目前高粱产量徘徊现象,提出了高粱超高产育种设想,并对其技术路线进行了探讨。     

Diurnal changes in net photosynthetic rate in potato in two environments

Summary Diurnal changes in net photosynthetic rate were measured in a furrow-irrigated potato crop and in a riverbed crop where the water table was always maintained at 20–28 cm from the soil surface. In the irrigated crop, the photosynthetic rate during mid-afternoon was about half the peak rate observed at noon. This reduction was accompanied by a near tripling of stomatal resistance, a 45% reduction in transpiration, and a 5-fold increase in the difference between leaf and air temperatures. No such changes were observed in the riverbed crop where the photosynthetic rate remained nearly constant at about 0.9 mg m⁻² s⁻¹ between 9 a.m. and 4 p.m. Tuber yield in the riverbed crop was about 30% higher than in the irrigated crop.     

我国干热区甘蔗抗旱植蔗主要问题研讨

我国干热蔗区是我国甘蔗糖业的重要生产基地,蔗区光热资源丰富,唯降水分布不均成为植蔗生产的主要限制因子;根据蔗区植蔗特点和甘蔗需水规律,苗期抗旱是干热蔗区抗旱植蔗的关键,保证较多的总苗数和足够的生长量是苗期抗旱植蔗需解决的关键技术难题,制定相应的苗期抗旱植蔗栽培技术措施是解决该难题的重要保障;该观点为我国干热蔗区植蔗生产、甘蔗引育种提供理论和技术支持。     

棉花体细胞无性系变异的研究进展

体细胞无性系变异是一种重要的细胞工程育种技术,其应用于棉花育种的前提是建立高效的组织培养诱导再生植株体系.本文简要综述了棉花离体诱导植株再生研究的现状,重点讨论了棉花体细胞无性系变异的表现、利用方法及机理,提出了当前研究存在的问题并对今后的研究进行了展望.