浙江省2002年审定通过的水稻新品种

１ .浙粳２０是浙江省农科院作物所选育成的晚粳稻新品种。经浙江省金华市１９９９年和２０００年两年区试 ,平均单产为４５３．０５ｋｇ／６６７ｍ２,比对照秀水１１增产１１．０５ % ,其中１９９９年增产达显著水平 ,２０００年增产达极显著水平。２００１年生产试验平均单产４５９．８ｋｇ／６６７ｍ２,比对照秀水１１增产１１．３%。两年区试结果 :平均全生育期１２７．４天 ,与对照秀水１１相仿。平均每６６７ｍ２有效穗２４．１７万 ,每穗总粒数８２粒 ,实粒数７５．５粒 ,结实率９２．１ % ,千粒重２５．２ｇ。抗性鉴定结果 :高抗稻…     

浙江省2001年审定通过的水稻新品种

１.浙农９５２浙江大学农学院育成。浙江省１９９７、１９９８和１９９９三年早稻区试平均单产分别为４４６．６２ｋｇ／６６７ｍ２、４２７．７７ｋｇ／６６７ｍ２和３９３．１１ｋｇ／６６７ｍ２,比对照浙７３３分别减产３．１% ,增产０．２６ %和１．５７% ;２０００年生产试验平均单产４４０．６ｋｇ／６６７ｍ２,比浙７３３增产０．６４ %。三年区试平均全生育期１１０．６天 ,属迟熟早籼稻。抗稻瘟病能力较强 ,感白叶枯病、细条病、白背稻虱和褐稻虱。米质中等。适宜浙江省作早稻种植 ,但分蘖力偏弱 ,需适当增加插秧本数。２.瑞科２６…     

长粒粳稻—“水晶2号”

水晶２号株高１０１．５ｃｍ,分蘖中等 ,株形紧凑 ,穗长 ,着粒密度较稀。平均穗长１９．４ｃｍ ,每穗总粒１０３．３粒 ,实粒９７粒 ,结实率９３．７%。产量高 ,１９９９年 ,松江区种子公司组织区试 ,佘山点单产５９５．４ｋｇ／６６７ｍ２,居１５个参试品种第６位 ,闵行区种子管理站组织区试 ,马桥点单产５１２．７ｋｇ／６６７ｍ２,居７个参试品种第１位 ,比对照９３-６３增产８．６７%。松江区佘山镇农业公司 ,生产试种１ｈｍ２,平均单产４８７．５ｋｇ／６６７ｍ２。２０００年 ,闵行区马桥镇第二农场试种１．３４ｈｍ２ ,平均单产５５…     

湖北省2002年审定通过的水稻新品种

１ .鄂早１６系湖北省荆州市种子总公司育成的早稻品种。１９９８～１９９９年参加湖北省早稻品种区试 ,两年试验平均单产３７８．０７ｋｇ／６６７ｍ２,比对照鄂早１１减产３．５１ %。全生育期１１１．６天 ,比鄂早１１长３．６天。高感白叶枯病和穗颈稻瘟病。２.嘉育２０２系浙江省嘉兴市农业科学研究院育成的早稻品种。２０００～２００１年参加湖北省早稻品种区试 ,两年试验平均单产４５４．０９ｋｇ／６６７ｍ２,比对照鄂早１１增产５．３３ %。全生育期１０６．８天 ,比鄂早１１长０．８天。中抗白叶枯病 ,高感穗颈稻瘟病。３.嘉育１…     

吉林省2001年审定通过的水稻新品种

１．吉粳７８号 由吉林吉农水稻高新科技发展有限责任公司育成的中晚熟水稻品种。全生育期１３８天,株高９５～１００ｃｍ,株型紧凑,分蘖力强,穗均粒数１００粒左右,千粒重２５．５ｇ。中抗苗瘟和叶瘟,感穗瘟。１９９８～２０００三年区试平均单产５９０．２ ｋｇ／６６７ｍ２,比对照农大 ３号增产 ４．９％;１９９９～２０００年两年生产试验平均单产 ５４４．４ ｋｇ／６６７ ｍ２,比对照增产２．０％。适宜无霜期１４０天左右的中晚熟稻区种植。 ２．组培２８ 由吉林吉农水稻高新科技发展有限责任公司育成。全生育期１３５天,…     

早籼新品种温12的特征特性及栽培要点

温１２(原名温鉴１２)系温州市农科院选育而成的迟熟早籼新品种 ,全生育期１１４天左右 ,比浙７３３迟１～２天。在温州累计试种面积已达１０５３３ｈｍ２。经几年试种示范表现出稳产高产 ,熟期适中 ,穗大粒多 ,米质较优 ,食味佳等特性。于２００１年４月通过浙江省品种评审委员会审定。一、产品表现温１２于１９９５年参加温州市联合鉴定试验 ,平均产量４６２．７ｋｇ／６６７ｍ２,比对照温１８９增产８．７ % ,达显著水平。１９９６年参加浙江省联品试验 ,平均产量４９４ｋｇ／６６７ｍ２,比浙７３３增产０．６% ,居迟熟组第一位。１９９…     

水稻优质高产新品种超产2号及其配套栽培技术

超产２号系吉林省农业科学院水稻研究所选育而成 ,２０００年通过吉林省品种审定委员会审定。该品种经过吉林省大面积试种示范 ,表现出优质、高产、适应性广等特点 ,被吉林省评为第二届优质米品种 ,为优质稻米开发和农业产业化经营提供了良好的品种条件 ,２０００年被农业部列为“跨越计划”项目。一、产量表现超产２号品种在品比试验中单产５４１ｋｇ／６６７ｍ２,比对照品种吉引１２增产５３ｋｇ,增产１０．９% ;在区试中超产２号平均单产５８０．８ｋｇ／６６７ｍ２ ,比对照吉引１２增产４２．３ｋｇ,增产５% ;在公主岭市南崴子镇大面积…     

优质杂粳常优1号的特征特性及高产栽培技术初探

常优１号 ,系江苏省常熟市农科所育成的杂交粳稻新组合。无锡市于２０００年引进试种。一、产量表现２０００年参加无锡市品比试验 ,平均单产６３３．８ｋｇ／６６７ｍ２,２００１年续试平均单产６４７．８ｋｇ／６６７ｍ２,均位居参试品种的首位 ,比对照武运粳７号分别增产８．０%和１．９７ %。２０００年江苏省江阴市顾山示范区试种０．２６ｈｍ２,平均单产６５２ｋｇ／６６７ｍ２,２００１年示范种植１．９７ｈｍ２,平均单产６８１ｋｇ／６６７ｍ２,较相同栽培条件下的武运粳７号高５０ｋｇ以上。二、特征特性１.生育期常优１号属中熟晚…     

安徽省2002年审定的水稻新品种

２００２年 ,安徽省农作物品种审定委员会审定通过了６个水稻新品种 ,现简要介绍如下 :１．皖稻６２原名晚粳９５１５,系安徽省巢湖市炯炀种子分公司选育的晚粳品种。１９９８～１９９９年两年参加区域试验 ,平均单产４３９．８ｋｇ／６６７ｍ２ ,比对照Ｄ９０５５和７０优０４分别增产４．６８%和４．２７ % ;２０００年参加生产试验 ,平均单产３９０ｋｇ／６６７ｍ２,比对照Ｄ９０５５增产７．５０%。全生育期１３１天 ,株高９０～９５ｃｍ ,茎秆粗壮 ,分蘖力较强 ,株型紧凑 ,叶色深绿 ,剑叶窄挺 ,抽穗齐 ,每穗总粒数９０粒左右 ,结实率８…     

湖北省2001年审定通过的水稻新品种

１．鄂早１３系湖北大学育成的早稻品种。１９９８～１９９９年参加湖北省早稻品种区试 ,两年试验平均单产４５５．５９ｋｇ／６６７ｍ２,比对照鄂早１１增产１６．３０ %。全生育期１１２天。２．鄂早１４系黄冈市农科所育成的早稻品种。１９９８～１９９９年参加湖北省早稻品种区试 ,两年试验平均单产３９３．８７ｋｇ／６６７ｍ２,比对照鄂早１１增产６．１０%。全生育期１０８天。３．鄂早１５系湖北省荆州农科院育成的早稻品种。１９９９～２０００年参加湖北省早稻品种区试 ,两年试验平均单产４２８．６３ｋｇ／６６７ｍ２ ,比对照鄂…     

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.