谈谈湖南有机茶开发

介绍了有机茶开发的意义、有机茶开发的条件，对目前有机茶开发中遇到的主要问题和湖南有机茶发展的对策进行了初步探讨。     

有机茶开发前景及其关键技术

在概述世界和我国有机农业与有机茶开发现状的基础上,指出发展有机茶将为我国大宗茶生产开辟一条新途径。同时,着重阐述了有机茶开发的土壤管理、茶园施肥和病虫草防治等三方面的关键技术。     

浙江茶情(2)

有机茶工程启动为应对国际"绿色壁垒"的挑战,促进茶叶产业升 级,省农业厅和省供销社于2月28日在杭州召开了全省降低农残、开发有机茶工程会议,嵊 州 、宁海、武义等20个有机茶工程试点县(市)的政府分管领导、农业(林特)局长,茶叶科研、 教育、技术监督、出入境检验检疫及企业代表参加会议,省农业厅赵宗英厅长作了"严格控 制农残、大力开发有机茶,促进浙江茶叶产业健康发展"的主题讲话.会上,发布了<有机茶>标准,介绍了开发有机茶的有关技术及成功经验.这次会议非常及时,富有成效:一是分析了形势,统一了对降低农残、开发有机茶重要性和紧迫性的认识;二是研究部署了"有 机茶工程"方案的五年规划;三是落实了当前降低农残、开发有机茶、搞好产销衔接、加强 农药管理等具体措施.     

办好专业合作社促进有机茶发展

义乌市道人峰茶业有限公司从1997年着手开发有机茶以来,有机茶生产基地建设与有机茶出口创汇均取得了较快的发展。公司通过逐年扩大承包茶园面积,有机茶产量逐渐增加,但由于公司自身条件和能力的限制,一方面公司自营承包茶园的扩大有限,远远满足不了有机茶出口量不断增加的需要,另一方面义乌市不少茶叶专业户看到公司有机茶出口创汇效益好,纷纷要求该公司帮助指导开发有机茶,收购     

永顺县茶叶生产现状与有机茶开发对策

简述了永顺县茶叶生产现状,着重分析了永顺县开发有机茶的有利条件,并提出开发有机茶的措施。     

宜昌茶叶生产向有机转换的问题与对策

开发有机茶是提高茶业效益、促进茶业向无公害化发展的重要途径。在分析有机茶生产对技术环境要求的基础上，针对当前宜昌茶叶生产向有机茶转换存在的问题和技术现状，从政策、思想、基地、企业、技术和监管等六个方面，提出相应的对策。     

新发展会员

江西省江南有机茶开发有限公司单位简介:江西省江南有机茶开发有限公司成立于2006年,是一家集种植、加工、销售、科研为一体的民营茶企     

浙江有机茶产业状况与发展对策

浙江是我国最早生产并出口有机茶的省份,有机茶和名优茶开发、茶树良种化、茶叶深加工一起被列为浙江茶产业发展的四大工程。在各级政府的重视支持和产销企业、科技人员以及广大茶农的共同努力下,我省有机茶产业发展较快,生产初具规模,市场开拓初见成效,有机茶知识不断普及,消费者队伍不断扩大。为了全面了解我省有机茶产业发展状     

现代茶叶产品与深加工产品的开发

1　现代茶叶产品的开发现代茶叶产品是指以茶叶为主要原料 ,在加工理念、生产方法上有别于传统茶叶产品 ,并在开发过程中融入了一些现代高科技手段。其产品符合现代人对饮料要求“天然、营养、保健、回归自然”的消费时尚。1 1　有机茶的开发随着人们健康意识的增强 ,无污染的有机茶已引起国内外消费者的普遍关注。有机茶比绿色食品的要求更高 ,技术难度更大。有机茶选择在无污染的产地 ,按照“有机农业”的生产体系与方法生产出鲜叶 ;禁止使用人工合成的农药、化肥、除草剂等物品 ,只能使用有机肥 ,采用生物的、农业的措施和物理的方法防治…     

文献摘要

湖南省有机茶开发现状与主要技术措施及展望 分析了湖南省发展有机茶的必要性和有机茶开发的现状，总结了湖南生产有机茶的关键技术：一是优化茶园生态环境，保证鲜叶原料来自良好的生态环境；二是增施有机肥，提高土壤肥力，保持茶园可持续生产；三是推广病虫害的生态调控技术，防治好茶园病虫害，保证茶叶高产优质；四是建立有机茶质量管理体系，防止有机茶二次污染。提出湖南省有较多适合有机茶发展的生态条件，但要做到既要积极创造条件，又要慎重发展，以利准确定位，克服盲目性。     

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.