共查询到20条相似文献,搜索用时 203 毫秒
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对红松(Pinus koraiensis.)播种育苗技术进行了总结,详细介绍了种子采收和处理、整地、播种方法和苗期管理等关键育苗技术。 相似文献
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从杜仲种子采收、储藏、催芽、育苗地选择、播种时间及播种方式等多方面介绍了杜仲播种育苗技术,并对杜仲幼苗管护和大苗培育等措施进行了分析,旨在为杜仲的播种育苗和栽培提供参考。 相似文献
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笔者从种子的采收与储藏、种子催芽、圃地选择、整地作床、播种5方面总结了香椿播种育苗技术,并阐述了间苗及定苗、水肥管理、松土除草、病虫害防治等幼苗管理技术。最后,介绍了香椿大苗培育、采摘等措施,以期为香椿的播种育苗和栽培提供技术参考。 相似文献
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核桃种子烂种原因及发芽条件的研究 总被引:6,自引:0,他引:6
对核桃种子的采集时间、调制方法、浸种和催芽技术等几个方面进行了系统研究,并进行了种子生理学的测定,其目的是探明核桃种子的烂种原因和发芽条件。结果表明,采种过早和堆沤过久都会引起种子霉烂,而种子吸水不足则是导致沙藏烂种和播种烂种的主要原因。同时也查明,种壳的机械约束是种子发芽慢的主要原因,较高的环境温度和充足的种子含水量是核桃种子发芽的适宜条件。采取适当晚采,合理调制和沙藏前适当浸种,播种前晒裂种壳,播种后提高地温等措施,可以减少烂种,加快出苗速度,提高出苗率。 相似文献
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Elias Pipinis Elias Milios Olga Mavrokordopoulou Pavlos Smiris 《Journal of Sustainable Forestry》2018,37(4):375-388
The aim of the present study was to investigate the effect of the natural sequence of temperature conditions between the time of seed sowing and their germination on dormancy release of Prunus avium, P. mahaleb, P. divaricata, P. laurocerasus, P. spinosa, Cornus mas, C. sanguinea, and Celtis australis seeds which are enclosed in a hard stony endocarp. According to their collection date, the seeds (with the endocarp) of the above species were sown outdoor in summer, autumn, and winter and the number of emerged seedlings was counted during the following two springs. For all species, the first sowing date was immediately after seed collection and cleaning. In all species, seedling emergence occurred in early spring and dormancy was released only after the exposure of seeds to specific season conditions. The exposure of seeds of all studied species, except C. australis, to a period of warm temperatures prior to winter was necessary for dormancy breaking and germination. Autumn sowing of P. laurocerasus and C. sanguinea seeds, which were collected in summer, and the sowing immediately after seed collection of the rest species, resulted in a maximum percentage of seedling emergence in the following spring. 相似文献
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播种后光照能明显地提高发芽率,发芽指数和幼苗的质量,浸种时光照和不同浸种时间,对发芽率影响具有统计学意义。播前在日照下浸种72小时,播后遮荫育苗,优于播前暗处理浸种和播后暗处理育苗的组合。 相似文献
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王生华 《中南林业调查规划》2013,(4):64-67
介绍了福建山樱花种子采集和处理方法,并研究了不同催芽方法和播种期对种子发芽率与幼苗生长的影响。结果表明,变温沙藏或冷藏的种子次年春播种的发芽率分别达94.5%和90.03%,变温沙藏的种子当年夏季播种的发芽率达83.8%,均能获得较高的发芽率;采种当年播种的苗木,以变温沙藏的地径和苗高为最大,分别达0.49 cm和24.47 cm,即采即播的地径和苗高为最小;采种次年播种的,以常温沙藏的地径和苗高最大,分别达0.90 cm和77.65 cm。 相似文献