共查询到19条相似文献,搜索用时 46 毫秒
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<正>清香核桃Juglandis具有健壮的生长势,广泛的适应性,较强的抗病性,出众的丰产性,美观的坚果外形,优异的种仁品质,经济寿命长等优点,是优质商品核桃生产的理想品种。2004年纳入国家星火计划推广项目,2007年引种十堰丹江口,开始适应性栽培,经过多年观察、栽培和研究,探索出了一整套清香核桃栽培实用技术。 相似文献
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清香核桃是我国从国外引种的优良核桃品种。介绍了清香核桃主要性状和生物学特性,分析了清香核桃在新绛县晚实的原因,探讨了清香核桃幼树早实丰产理论,提出了早实丰产技术途径。 相似文献
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核桃(JuglangnegiaL.)胡桃科胡桃属,落叶乔木,雌雄同株异熟,为异花授粉植物。其属温带树种,耐干冷,喜光,深根性,怕水淹,对土壤要求严格,喜生于土层深厚、肥沃、湿润的中性砂壤土、壤土及石灰性土壤的山谷和山麓地带。核桃适生于在年平均气温6~15℃,气温-30~37℃,降水量500~800mm,无霜期在180~200天左右的环境中。核桃是经济树中很有价值的干果类树种之一,其核仁以营养丰富而著称,它富含脂肪酸、蛋白质、多种维生素及微量元素,既可滋补健身,又可防病治病,是很好的营养医疗保健食品。此外,核桃… 相似文献
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"石门核桃"及其优良品种 总被引:1,自引:0,他引:1
阐述了历史名牌产品"石门核桃"的发展历程,介绍了"石门核桃"优良品种的选育过程和主要品种特点.元宝,坚果元宝形,单果质量14.5 g,出仁率59.2%,脂肪含量68.2%,蛋白质17.7%,风味浓香不涩;龙珠,坚果近圆形,单果质量13.91 g,出仁率54.71%,含脂肪72.9%,蛋白质13.0%;魁香,坚果圆形,单果质量13.9 g,出仁率55.4%,仁极为饱满,香味浓,含脂肪68.5%,蛋白质18.0%;硕宝,坚果近元宝形,单果质量21.15 g,出仁率52.12%,含脂肪59.1%,蛋白质22.3%. 相似文献
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晋香核桃新品种的选育 总被引:1,自引:0,他引:1
为了丰富我国早实核桃品种资源及选育仁色浅、商品性状好的优良品种,于1985年从引进的新疆核桃种子实生苗中选育出了一个早实核桃新品种——晋香(原代号为"晋6032"),随后对其树体的生长特性及结果习性进行了系统调查、抗逆性测定和区域栽植试验。结果表明:其树姿较开张,雄先性,为中熟品种;坚果壳面光滑美观,平均单果质量为11.5g,壳厚0.75mm,出仁率63.97%,易取整仁,浅色仁的比例占96%,仁饱满,风味特香,品质上等;盛果期的果枝率为85.5%,果枝的坐果数为1.4个;单位树冠垂直投影面积产仁量0.18~0.20kg·m-2。该品种适宜矮化密植或乔化栽培。 相似文献
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核桃资源的综合加工与利用 总被引:12,自引:0,他引:12
根据核桃资源的情况,对目前核桃综合利用与加工进行了综述,并介绍了核桃深加工产品的工艺流程和生产方法,以促成核桃资源产业化,变山区资源优势为经济优势,为山区人民脱贫致富开辟新的途径。 相似文献
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Beetles (Scolytinae) form intimate associations with a taxonomically and functionally diverse suite of nematodes that are phytopathogens, fungal feeders, and entomoparasites. Despite their ubiquity, the ecological significance of nematodes in the lifecycles of economically important bark and ambrosia beetle species (Curculionidae: Scolytinae) and associated plant diseases remains largely unexplored. Thousand cankers disease (TCD) is caused by the walnut twig beetle (WTB, Pityophthorus juglandis Blackman) and the fungus Geosmithia morbida (Kolařík, Freeland, Utley & Tisserat; Ascoymycota: Hypocreales) and causes foliar senescence, progressive crown dieback, and mortality in black walnut (Juglans nigra L.) throughout western North America. In this study, nematodes recovered from P. juglandis and J. nigra in Idaho (ID) and Washington (WA) were identified morphologically and by constructing multilocus phylogenies to infer taxonomic relationships to taxa for which molecular data were available. We conducted assays to determine the extent to which nematodes feed and reproduce on G. morbida and other fungi commonly found in galleries of P. juglandis. Inoculation experiments were conducted to determine the effect of nematodes on the area of subdermal necrotic lesions (cankers) caused by G. morbida in branches of mature J. nigra and stems of seedlings. The phoretic nematode Bursaphlenhus juglandis (Ryss, Parker, Alvarez-Ortega, Nadeler & Subbotin) was frequently found under elytra of WTB in all locations, and a free-living nematode (Panagrolaimus sp.) was also widespread and found in the bark of mature trees. Both B. juglandis and Panagrolaimus sp. reduced the size of cankers caused by G. morbida in seedlings and branches of mature trees, respectively. However, these species may play opposite roles as disease synergists and antagonists based on the observation that exudates and/or microbiota associated with Panagrolaimus sp., but not B. juglandis destroyed G. morbida colonies in culture. Furthermore, B. juglandis contributed to foliar symptoms in seedlings inoculated with G. morbida. An entomoparasitic nematode (Aphelenchoididae), most closely resembling an Ektaphelenchus sp., was also found in the haemocoel of WTB. Infection rates were positively related to beetle population sizes as inferred from emergence rates. Ditylenchus sp. was also found in incubated walnut wood in WA and Rhabtidolaimus sp. was phoretic on P. juglandis and found in incubated walnut wood in WA and ID. The community of nematodes in J. nigra in WA and ID differed substantially from what has been observed associated with J. nigra in its native range. 相似文献
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