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西南桦育苗基质选择试验初报 总被引:22,自引:0,他引:22
以8种基质开展西南桦育苗试验,结果表明:西南桦育苗基质以Ⅱ号配方、Ⅶ号配方效果最好,苗木地径粗壮,高径比小,苗木重量大,根系发达。而以Ⅴ号配方和纯黄心土育苗效果最差,黄心土+泥炭基质雨季育苗效果亦不佳。 相似文献
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热带南亚热带速生珍贵用材树种—西南桦 总被引:22,自引:0,他引:22
西南桦为珍贵的热带山区和亚热带速生树种,在研究其生物这,生态学的基础上,进一步研究了其栽培技术,并就发展西南桦提出了建议。 相似文献
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This paper dealt with an experiment on container seedlings culture with nonwoven and light medium for Cupressus funebris, a precious timber tree species, through orthogonal design. The effects of container height, quantities of controlled release fertilizer and the medium proportion on seedling quality of Cupressus funebri were studied. The results showed that seedling height, ground diamater, divarication number and the ratio of seedling height to ground diameter of Cupressus funebri were significantly affected by the height of container and the quantities of controlled release fertilizer, and little influenced by the medium proportion. There were significant different influences on seedling growth among different treatment combinations. The treatment combination No.9 was the best one with averaged seedling height, ground diamater, divarication number and the ratio of seedling height to ground diameter of 21.75 cm, 0.271 cm, 10.7 branches and 80.29, respectively. The treatment combination of No.6, No.3 and No. 5 were relatively good treatment. The length of seedling container of nonwoven with diameter of 5 cm for Cupressus funebris, could be selected as 10—12 cm. The quantities of controlled release fertilizer of 3 kg·m-3 and the seedlings density of 215—220 plants·m-2 could be the optimal for nursing seedling with high quality. The costs of medium proportion on several container seedlings base of Zhejiang Province were compared and analyzed. 相似文献
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自1995年以来,通过在西南桦育苗生产实践中的探索和创新,采用所谓的"双层膜"育苗技术,在播种出苗期,采取在育苗大棚内又盖小棚的方法,提高了种子发芽率和幼苗的生长速度,较常规育苗方法缩短了苗木出圃时间、降低了育苗成本、提高了苗木质量.对相关的采种母树选择、采种时间、苗圃整地、大棚建造、播种、幼苗管理、炼苗及苗木出圃等一系列的育苗技术流程进行了详细论述. 相似文献
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通过红椎、火力楠、西南桦与米老排4种苗木对4种不同育苗基质的生长适应性分析可知,除红椎与米老排对含塘泥的基质表现出不适应外,各树种对其它3种基质均适应良好,在生产中可推广应用。 相似文献
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云南省林科院热区速生珍贵树种造林试验示范课题组 《西部林业科学》1992,(4)
西南桦(Betula alnoides Buch.-Ham.),又称西桦、蒙自桦、化桃树。落叶乔木,高可达30米,径达80厘米,干形通直,尖削度小,材质优良,木材纹理直、重量硬度适中,干缩变形小,具有多种工业用途,是我省胶合板面板的主要用材树种之一,镟切单板的花纹、色泽都很美观,也是优良的家具、装修用材及造纸原料,很受市场欢迎。西南桦广泛分布在我省滇中高原以南的南亚热带及部分中亚热带地区,分布区域约占全省面积的40%。生长分布区的极限高温 相似文献
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对西南桦的工厂化轻型基质穴盘育苗技术和常规塑料袋育苗技术(对照)进行了对比试验.结果显示,轻型基质穴盘育苗技术比对照提前2~3d达到出苗率最高峰值;苗高、地径、主根长、Ⅰ级侧根数和大于2 cm的Ⅰ级侧根数分别比对照提高12.7%、7.8%、10.5%、37.7%和63.1%.穴盘培育的苗木的苗高、大于2 cm的Ⅰ级侧根数、主根长和Ⅰ级侧根数与对照差异显著,但主根长与苗高、地径、Ⅰ级侧根数间相关性不显著.以上结果表明,工厂化轻型基质穴盘育苗技术能明显提高西南桦苗木质量,在生产中具有较好的推广应用前景. 相似文献
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以胸径、树高、材积为数量评价指标,结合干形、冠高比和分枝粗细形质指标,采用5株优势木对比法开展了西南桦人工林的优树选择技术研究。通过对西南桦人工林10 21年生不同林龄阶段的优树选择标准的总结,提出了优树选择标准,即优树胸径、树高、单株材积分别大于5株对比优势木平均值的9%11%、5%7%、26%31%以上,形质指标综合得分大于7.5,共选择出西南桦优树37株,入选率为33.9%。西南桦优树的选择标准在实际应用中可根据林分状况适当调整,选优即要考虑其生长性状,同时注意材性、抗性的选择以保证西南桦育种群体的遗传多样性。 相似文献