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中国棉花学会2011年年会于8月8—9日在安徽省安庆市召开。会议由安徽省农科院棉花研究所和安徽省作物学会共同承办。参会正式代表661名。会前由中国棉花杂志社编辑出版论文汇编，收录论文160篇。 相似文献
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依照公平、公正、科学、效率的原则,通过环境试验客观评价棉花新品种(系)在安徽省各棉区的丰产性、稳产性、抗病虫性和纤维品质等,为安徽省棉花品种审定和推广提供科学依据。参试品系(种)共13个,泗阳1228、ZJ杂501、H919、科农棉99-1、农华棉408、广棉2号、A52、升金棉30号、A-6、爱棉1号和J-18,杂交品种对照为皖杂40F1,常规品种对照为泗棉4号。2006年全省共安排试点7个。由中国农科院棉花所进行抗病鉴定,农业部棉花品质监督检验测试中心进行棉纤维品质检测。试验采用随机区组排列,重复3次,小区面积20 m2。1棉花生育期间气候特点及栽培管… 相似文献
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种质资源是培育棉花新品种的基础材料。安徽省植棉历史悠久，生产上种植的棉花品种经历了从引进到自主选育的漫长过程。贯穿安徽省棉花新品种选育全过程的种质资源创新研究从艰难起步到繁荣发展，经历了7个不同的发展阶段，种质创新的目标也不断发展变化。品种引进时期，种质资源创新研究的主要目标是引进和筛选适合当地种植、综合性状优良的种质资源，丰富棉花种质资源的遗传基础。自主选育品种时期，种质资源创新研究主要针对育种目标，创制具有丰产、抗病、抗虫、优质、高配合力等优良性状的新种质，满足本省棉花生产不同发展阶段对新品种的需求。种质创新技术方法的不断改进与应用，促进了种质创新水平逐渐提升。对安徽省近70年（1953―2022年）棉花种质资源创新研究进行了回顾分析，并对未来发展方向进行了分析与展望。 相似文献
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泗杂3号特征特性及主要栽培技术 总被引：1，自引：1，他引：0
泗杂3号采用优质高产抗病棉花新品系间杂交育成的集高产、优质、抗逆性好、适应性广于一体的杂交棉新组合。2000-2001年进行多点试验及生产示范,2002-2004年参加安徽省及江苏省杂交棉品种区域试验与生产试验,2003-2004年参加全国长江流域区域试验,2005年通过安徽省及江苏省棉花品种审定,同年参加全国长江流域棉花品种生产试验。1特征特性1.1丰产性。2002-2003年江苏省棉花品种区域试验中,平均每公顷子棉3529.2kg,比对照泗棉3号增产20.67%;皮棉1540.5kg,比对照增产18.76%。2002年安徽省棉花品种区域试验中,每公顷子棉4009.9kg,比对照皖杂40增… 相似文献
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《Plant Production Science》2013,16(2):189-198
AbstractGrain 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. 相似文献
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《Journal of Crop Improvement》2013,27(2):415-432
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. 相似文献
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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。 相似文献
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Corné Kempenaar Thomas Been Johan Booij Frits van Evert Jean-Marie Michielsen Corné Kocks 《Potato Research》2017,60(3-4):295-305
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. 相似文献
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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. 相似文献
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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. 相似文献