香蕉深加工在香蕉产业中的作用、发展现状与趋势及存在问题

论述香蕉深加工在香蕉产业中的作用、重要性，综述和探讨香蕉深加工的现状和发展趋势，分析香蕉深加工中存在的问题。     

徐闻县香蕉产业现状与发展对策探讨

分析广东省徐闻香蕉产业的现状及存在的问题，提出加强香蕉产业信息网络预报系统建设、实施香蕉深加工、完善科技创新与推广体系，促进香蕉产业升级等对策，以提升香蕉产业的生产效益、市场适应性与竞争力。     

香蕉茎秆废弃物综合利用研究现状与分析

介绍中国香蕉种植情况及香蕉茎秆废弃物状况，阐述国内外香蕉茎秆废弃物在纺织、造纸、饲料、肥料、能源等领域的利用状况及研究进展，结合香蕉产业发展现状分析香蕉茎秆废弃物综合利用过程中存在的问题，提出对策性建议。     

香蕉避寒栽培技术

寒害是限制香蕉发展的关键因素，也是产量不稳定、单产低的主要原因。运用香蕉“避寒”高产稳产栽培技术，可缓解寒害对香蕉产量的影响，提高香蕉的产量和质量，增加农民收入。     

福建香蕉种质资源的研究与利用现状

香蕉种质资源研究是香蕉研究中的一个重要方面。本文概述了国内外香蕉种质资源的研究利用情况，香蕉种质资源的研究，已经从最初的形态学水平深入到了分子水平，分子标记和基因工程等新的手段和方法已经得到了广泛应用；分析了福建香蕉种质资源的研究现状，并对福建香蕉种质资源的研究发展方向作了讨论。     

海南省香蕉生产的比较优势分析

作为我国香蕉生产的主要产区，海南香蕉的生产对我国整个香蕉产业的发展具有重要的意义。文章首先分析了海南香蕉生产的自然生态条件优势、品质优势和产业基础优势。在此基础上，采用作物区域比较优势的分析方法，逐一通过对海南香蕉与其他香蕉主产区的比较优势分析、海南香蕉同海南省内其他5种热带水果的比较优势分析以及1988～2007年海南香蕉生产的比较优势变动分析，以综合评价海南省香蕉生产的比较优势。结果显示，海南省香蕉生产具有综合比较优势和规模优势，但却缺乏生产效率优势。根据分析结果，文章最后提出了一些相关的政策建议。     

香蕉等水果可降低老年痴呆发病率

研究人员在近期举行的一次国际会议上呼吁，应该使香蕉成为非洲重要的创收作物。乔莫?肯雅塔农业技术大学的Esther Kahangi教授认为，肯尼亚缺乏促进香蕉产业发展的相关政策，阻碍了肯尼亚香蕉产业的发展。     

香蕉采收技术现状及机械化生产对策

通过分析国内外当前香蕉生产机械化程度与无损采收技术，对比国内几种采收技术模式的应用情况，讨论适合中国香蕉产业发展的采收模式，并就香蕉采收与采后商品化处理提出了对策。     

香蕉育苗技术的推广应用

介绍健康、优质香蕉组培苗一、二级苗的培育技术，以促进香蕉产业的健康发展。     

香蕉的常温保鲜研究

用1000ppm浓度的多菌灵等杀菌剂处理，能有效地抑制香蕉炭疽病的发展；植物生长调节剂有延缓香蕉后熟的作用；采用聚乙烯装包装，有利于减少香蕉的干耗，以及延长其贮存期；经保鲜剂处理的香蕉比对照组延长一周以上的贮存期．     

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。     

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。     

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.     

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.     

Sugar and dry matter changes in potatoes overwintered in soil in Greece

Summary Potatoes were left in the soil from December, when the vines died, until February (cvs Claustar and Sebago) or April (cv. Spunta) in a location of central Greece with light, well drained soils and a mild climate. Tubers were analysed every two months for dry matter and sugar content and usually the dry matter content did not change significantly from December to February or April. The reducing sugars increased from December to February in tubers of all cultivars and significantly decreased in cv. Spunta from February to April.     

Changes in daily rainfall characteristics in major rice producing provinces in Laos

In order to find the changes in rainfall characteristics and to examine the flood damage to lowland rice, a statistical analysis was carried out on the 40-year daily rainfall record at four rainfall stations (Thangon, Paksane, Seno, and Pakse) in Laos. The rainfall record was divided into two periods of 20 years each. The results of this analysis revealed the trends in changes regarding the frequency and the timing of the heavy daily rainfall events at the four stations. In Paksane in particular, heavy daily rainfall events tended to occur in the latter half of the rainy season.     

兜兰离体快繁技术研究进展

由于生境破坏和人工过度采挖及繁殖的障碍,兜兰已是世界上最濒危的植物物种之一,所有野生种均被列入《濒危野生动植物种国际贸易公约》附录I而被禁止交易。突破其种苗繁殖技术瓶颈有利于兜兰种质资源的保护和可持续利用。本文对兜兰属植物无菌播种、共生萌发和组织培养技术等离体快繁技术的进展进行综述,并提出了目前存在的问题和解决方法,以期为兜兰属植物离体繁殖技术的深入研究和优质种苗的规模化生产提供参考。     

中国马铃薯单倍体诱导进展

马铃薯产量、品质、加工等方面都较其他作物有更大的提升空间,但由于四倍体马铃薯存在遗传基础狭窄且复杂、难以创新等诸多问题阻碍了相关研究的深入开展。利用马铃薯单倍体或双单倍体植株有望解决上述诸多难题。马铃薯单倍体具有加速育种过程、提高选择效率等优点。马铃薯单倍体的获得包括花药培养、花粉培养、孤雌生殖、子房培养。其中,花药培养因更易取材,并且得到胚性细胞团、愈伤组织或胚状体的几率更大等优点而研究最为广泛。获得单倍体植株的成功率与试验材料的基因型、培养条件、培养基添加物等诸多因素相关。根据不同的诱导方法简要阐述了中国马铃薯单倍体研究的历史及进展。