共查询到19条相似文献，搜索用时 234 毫秒
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针对当前咖啡种植者对咖啡品种的商品性及杯品质量认识不足、盲目引种而造成的生产中咖啡品种混乱，咖啡豆质量下降等问题，对普洱普遍种植的小粒种咖啡品种咖啡豆的商品性及杯品质量进行研究。研究表明：不同小粒种咖啡品种生咖啡的商品性及杯品质量存在较大的差异性；Catimor系列品种之间杯品质量差异不大。 相似文献
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本文在系统分析咖啡的生物学特性和生态适宜性条件的基础上，选取了与咖啡种植关系密切的五个农业气候因子作为依据，应用模糊数学方法，确定了云南热区各地各气候因子以咖啡种植的气候适宜度（录属函数），以及可作为区划指标的清晰度，根据分析结果，得出云南热区咖啡种植气卢条件的适宜性区划，试图探讨一种适用于单项作物区划的新方法。 相似文献
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小粒种咖啡卡蒂莫在干热区的生长比较 总被引：1，自引：0，他引：1
通过比较试验，在常规管理下，小粒咖啡卡蒂莫系列各品种在干热区均 生长良好，能获得较高产量，除卡蒂莫5号由于各方面性状不是很好外，其余各品种均可在干热区推广种植。 相似文献
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本文整理报道了巴西咖啡专家Mr·SCHINDLER来云霄县考察时谈及的八个技术问题,重点是咖啡品种、土壤改良和施肥、整型修剪、袋装育苗、种植技术等;以及借鉴巴西发展咖啡生产的经验,振兴云霄咖啡生产的意见. 相似文献
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为了筛选出适合于生产推广种植的中粒种咖啡优良品种,开展了以5个中粒种咖啡品种为接穗,小粒种卡蒂莫和中粒种实生苗为砧木的种间和种内嫁接试验。结果表明：26号品种单株干豆产量种间嫁接与种内嫁接差异不显著,百粒重种间嫁接大于种内嫁接,26号品种与小粒种卡蒂莫的亲和性较好;兴28、兴1、24-2、热研2号4个品种种间嫁接植株生长明显受到抑制,相比种内嫁接植株矮,主干细,冠幅小,一级分枝数少,一级分枝短,叶色黄,产量低,差异显著。中粒种咖啡各品种的一级分枝节间距、出米率、百粒重性状稳定,种间嫁接和种内嫁接差异不显著 相似文献
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咖啡种质资源收集、保存、评价及创新利用研究 总被引：1，自引：0，他引：1
概述云南省德宏热带农业科学研究所开展咖啡种质资源调查、收集、引进、保存、评价及创新利用等方面的研究现状。收集咖啡种质资源5个种377份,保存325份,建立3.34 hm2资源圃并被农业部授牌;对圃内保存的种质进行农艺性状、抗病虫、抗旱、抗寒及品质性状鉴定评价;对资源进行共性、个性描述及共享利用;筛选优异咖啡种质18份,创制优异咖啡新种质13份,获得杂交组合后代49份,审定和认定咖啡新品种各1个,注册登记新品种5个,建立配套的种苗生产和栽培技术体系,新品种累计推广近30 000 hm2,为中国咖啡产业的发展提供有力的品种和技术支撑。 相似文献
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马铃薯新品种中薯3号、紫花851、福克76和福克212在福建周宁试种。从品种的特征特性、晚疫病抗性及鲜薯产量综合分析,4个品种的鲜薯产量均比对照品种克新3号高,对晚疫病抗性均表现高抗或抗病,除了福克76裂薯较多外,其余3个品种的综合性状均表现较好。计划进一步加大对中薯3号、紫花851和福克212的引进力度,加快周宁县马铃薯老品种的更新换代步伐。同时继续引进新品种进行试种,增加农户对新品种的可选择性。 相似文献
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S. C. Ridley J. H. von Elbe J. A. Schoenemann 《American Journal of Potato Research》1980,57(9):407-415
Three new experimental Wisconsin, high-set varieties of potatoes, (WHS-15, WHS-16, and WHS-17), which in previous studies had yielded a large proportion of small tubers (B-size), were produced in sand and sandy loam locations during three seasons and processed to determine canning quality. Norland, a standard commercial canning variety, was used as control. The experimental varieties were superior or equal to Norland in field performance, producing a high total yield and a large proportion (27–43 percent) of small B size tubers suitable for canning. Product acceptability of the new varieties as estimated by a sensory panel was slightly less than Norland in 1976, but about equal in 1977. Mean specific gravity and total solids of each of the new varieties were somewhat higher than Norland. This was especially evident in the relatively dry 1976 season in which considerable sloughing of processed product was evident. The WHS-17 variety consistently produced the highest yields and tubers of lowest specific gravity. 相似文献
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The effect of blending small- and medium-leaved white clovers together in a mixture of varieties was examined under continuous sheep stocking over a period of three years. Four varieties were used, S184 and Gwenda, small-leaved varieties suitable for intensive sheep grazing, together with medium leaved varieties Menna and Donna, which are mainly used in general purpose seed mixtures for medium term leys. The small-leaved varieties were blended with Menna or Donna, sown with a commercial grass mixture and managed as near as possible to farm practice. Although the leaf size of Gwenda is only slightly greater than that of S184, blends based on these two small-leaved varieties behaved differently. In spring of the first harvest year the yield of Gwenda and of the clover in mixtures containing Gwenda was 27% greater than the yield of the same mixtures which contained S184. As the season progressed this difference decreased. In terms of total annual yields and saving in fertilizer N, the benefits of including white clover in a seed mixture were more pronounced when Menna was mixed with S184 and Gwenda, rather than when Donna was used, although both varieties are in the medium-leaf category. It was concluded that the slower establishment and the lower clover yield of S184, when compared with larger leaved varieties, can be overcome by blending with a variety that is slightly larger in leaf size, such as Menna, although the choice of variety may depend on sward management and its persistency under grazing. 相似文献
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用SSR标记评估东北三省水稻推广品种的遗传多样性 总被引：8，自引：0，他引：8
利用53个SSR标记和24个表型性状分析东北三省107个水稻推广品种,探讨东北水稻推广品种群体遗传多样性及不同育成年代、省份间的遗传多样性和互补性。结果表明,表型遗传多样性高于DNA水平,年代间表型与微卫星标记的遗传多样性具有较高的相似性,而地区间无明显相似性。东北水稻推广品种遗传多样性比较狭窄,随着时间推移增加的新等位基因多于消失的旧等位基因数。三省水稻推广品种遗传多样性呈现黑龙江>吉林>辽宁的趋势,但由于地区间频繁引种,东北水稻品种在区域上的遗传分化已不明显,其差异主要来源于品种间的基因型差异。不同省份存在较多的互补等位变异,最多的在黑龙江和辽宁之间。不同省份和不同年代间分别拥有各自特有和特缺的等位变异。参试品种可分为5个类群,每一类群均有两个以上年代（省份）品种分布。 相似文献