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盆栽龙血树快速水培技术 总被引:1,自引:0,他引:1
以盆栽龙血树切根母株为试材,采用非试管快繁及深液流栽培设施进行龙血树水培试验,研究了不同浓度(500、1000、1500、2000mg/L)的NAA、IAA和IBA速浸母株切口进行根系诱导试验以及用不同营养液配方进行龙血树水培试验。结果表明,用3种生根剂快速浸蘸母株切口都有促进龙血树生根的效果,综合来看,以NAA500mg/L处理可以显著提高生根数,更加符合生产要求;用4种营养液配方进行龙血树深液流栽培生长表现有较大差异,而花卉生长营养液最适合深液流栽培的龙血树生长。 相似文献
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不同营养液浓度与配方对水培观赏植物的影响 总被引:3,自引:0,他引:3
为了提高水培观赏植物的成活率和观赏价值,以风信子、月季、鹅掌柴、金琥、吉祥草、苏铁等6种观赏植物为材料,进行不同营养液浓度和不同营养液配方对水培观赏植物的影响研究.结果表明:随着营养液浓度的降低,水培观赏植物的新生叶数和新生根数出现"先增多后降低"的变化规律,1/2园试标准营养液浓度最适合其生长,其浓度为0.5~0.6 g/L;斯泰纳配方有利于鹅掌柴的生长;山崎配方有利于金琥、吉祥草生长;园试标准配方和山崎配方更有利于苏铁的生长.因此说明,不同植物适宜的营养液配方不同. 相似文献
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桉树(Eucalyptus)是我国南方广泛栽培的速生用材树种之一,虽有一套成功的造林经验,但对桉树的营养需求研究尚少。所以,对广为种植的桉树进行苗期矿质营养研究,对培育壮苗和幼林的合理施肥都有一定的意义。本试验选用水培法探讨适于桉苗生长的营养配方,在此基础上进行溶液浓度及pH值对桉苗生长影响的试验,以选出最佳的营养液配方,适宜的浓度和pH值,为进一步研究桉树矿质营养打下基础。 相似文献
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营养液对花卉的正常生长发育有着重要的作用。配制营养液时,应根据所栽培花卉的品种及不同生育期、不同地区来确定其配方和用量,做到营养全面均衡,利于植物吸收。常用的几种营养液配方1.硝酸钠10克、过磷酸钙70克、硫酸铵25克、硫酸钾35克、硫酸镁40克。用法:利用以上配方配制营养液时,先将其与水混合,然后再按100升水加3克的比例加入混合好的微量元素才可使用(微量元素通常以硫酸亚铁100克、硼酸粉14克、硫酸锰10克混匀研成粉末备用)。2.硝酸钾0.7克/升、硼酸0.0006克/升、硝酸钙0.7克/升、硫酸锰0.0006克/升、过磷酸钙0.8… 相似文献
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无土栽培营养液的改进及应用前景 总被引:1,自引:1,他引:1
通过对营养液的改进设计及其对猕猴桃、花叶芊、香石竹、非洲菊和豆瓣绿生长情况的分析对比,表明用改进后的营养液无土栽培的植物生长量、生物量、经济性状、观赏价值等均具优势,初步认为改进的5号液是一种值得推广的营养液。 相似文献
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水培花卉,就是将花卉直接栽培在营养液中,通过定期更换营养液或添加营养液,不断补充供给养料。
一、肥料种类。水培花卉需施入专门的营养液,它是根据花卉所需养分比例、浓度和酸度配制而成。一般按大量元素10倍、微量元素1000倍配制成母液,按需要稀释后使用。营养液可以自已配制,也可在市场购买花卉专用商品肥母液,或配方结晶复合肥, 相似文献
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为在北方应用白僵菌防治油松毛虫,笔者采用从灵丘县干旱林区分离得到的油松毛虫病原球孢白僵菌菌株Beauveria bassiana CGMCC NO.1573制备的孢子悬浮液和营养型湿菌粉剂,分别在冬季和春季对越冬的油松毛虫幼虫进行防治。结果显示:用2×106个/mL孢子悬浮液的防治效果不好,校正死亡率只有21%~29%;冬季用菌粉防治效果较好,感染率达到70.4%~85.4%;春季施用菌粉15 d~20 d,感染率达47.1%~54.5%.结论认为,在树干基部和枯落物下撒施"白僵菌营养型湿菌粉剂"集中防治越冬幼虫是北方防治油松毛虫的有效方法。 相似文献
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邓恩桉幼苗根系分泌有机酸对供磷浓度的响应 总被引:1,自引:0,他引:1
通过研究不同磷浓度对邓恩桉幼苗有机酸分泌的影响以探讨其对低磷的适应机理.试验采用Hoagland营养液并设置5个不同的磷浓度对邓恩桉幼苗进行培养,利用高效液相色谱(HPLC)测定根系分泌物中有机酸的种类及含量.结果表明:随邓恩桉幼苗生长,根际总体pH值呈现下降趋势,磷浓度不同下降幅度存在差异,无磷、极低磷和低磷条件下pH下降幅度最高.邓恩桉幼苗根系分泌物中所检测到的有机酸有草酸、甲酸、乙酸、苹果酸、乳酸和柠檬酸,其中草酸含量最高,磷浓度的不同对有机酸分泌的种类无影响,但6种有机酸分泌的量均在低磷水平时显著高于正常磷和高磷水平.邓恩桉幼苗根系分泌物对Al-P和Ca-P的活化能力高于对Fe-P的活化能力.根系分泌物对Fe-P的活化量不受磷浓度不同的影响,但对A1-P和Ca-P的活化能力不同,低磷环境下的根系分泌物对A1-P和Ca-P的活化量显著高于其他磷水平.邓恩桉幼苗低磷水平促进了根系6种有机酸的分泌,降低了根际周围的pH值,提高了根系分泌物对难溶磷的活化能力. 相似文献
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In natural ecosystems, nutrition available for plants shows great spatial heterogeneity. Much is known about plant root responses to the spatial heterogeneity of nutrition, but little is known about carbon usage in roots in nutrition-deficient patches and its effect on root longevity. In this study, split-room boxes were used for culture of Cercis chinensis seedlings, and the small rooms were supplied with different nutrition levels. The number of the first-order roots in the rooms with nutrition supply was significantly higher than that in the rooms with deficient nutrition. Specific root length (SRL) of the first-order roots in the rooms with deficient nutrition reached its peak at day 64 after nutrition treatment. There was no significant SRL differences between the two order roots during the experiment. Biomass of the first-order roots in the rooms without nutrition supply was significantly less than that of the first-order roots in the rooms with nutrition supply from day 64 to 96. The total biomass of the lateral roots in the rooms without nutrition supply decreased from day 64 to 96. The activities of the enzymes in roots in the rooms without nutrition supply increased and the activities of alkaline invertases in roots in the two sides of split box did not change significantly. The activities of the enzymes in roots in the rooms without nutrition supply increased gradually. These results suggest that nutrition spatial heterogeneity induced the changes in root traits and plants actively controlled carbon usage in roots in nutrition-deficient patches by regulating the activities of invertases and sucrose synthases, resulting in the reduction in carbon usage in the roots in nutrition-deficient patches. 相似文献
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入侵植物假苍耳对镉的富集特征 总被引:2,自引:0,他引:2
通过营养液培养试验研究入侵植物假苍耳(Iraxanthifolin)营养生长阶段对镉的富集特征。实验结果表明,在浓度为0.5~14mg/L的镉溶液处理条件下,假苍耳对镉具有很强的耐性及富集作用,假苍耳地上部的镉含量均大于其根系的镉含量,地上部的镉含量为121.22~474.30mg/kg,转移系数为1.43~8.62,富集系数为2.49~165.68,均满足镉超富集植物的各项特征,且具有高达14mg/L的镉耐受浓度,初步说明假苍耳是一种镉超富集植物,这为镉污染土壤的生物修复提供了一种新的种质资源。 相似文献
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In natural ecosystems, nutrition available for plants shows great spatial heterogeneity. Much is known about plant root responses to the spatial heterogeneity of nutrition, but little is known about carbon usage in roots in nutrition-deficient patches and its effect on root longevity. In this study, split-room boxes were used for culture of Cercis chinensis seedlings, and the small rooms were supplied with different nutrition levels. The number of the first-order roots in the rooms with nutrition supply was significantly higher than that in the rooms with deficient nutrition. Specific root length (SRL) of the first-order roots in the rooms with deficient nutrition reached its peak at day 64 after nutrition treatment. There was no significant SRL differences between the two order roots during the experiment. Biomass of the first-order roots in the rooms without nutrition supply was significantly less than that of the first-order roots in the rooms with nutrition supply from day 64 to 96. The total biomass of the lateral roots in the rooms without nu-trition supply decreased from day 64 to 96. The activities of the enzymes in roots in the rooms without nutrition supply increased and the activities of alkaline invertases in roots in the two sides of split box did not change significantly. The activities of the enzymes in roots in the rooms without nutrition supply increased gradually. These results suggest that nutrition spatial heterogeneity induced the changes in root traits and plants actively controlled carbon usage in roots in nutrition-deficient patches by regulating the activities of invertases and sucrose synthases, resulting in the reduction in carbon usage in the roots in nutrition-deficient patches. 相似文献
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氮磷配比对水曲柳光合作用的影响 总被引:6,自引:0,他引:6
以水曲柳2年生苗木作为试验材料,在人工气候室中用霍格兰水培营养液修改配方(四种氮、磷的不同配比,清水作为对照)进行水培试验,测定了叶片的光合作用、叶绿素荧光以及叶绿素含量等,以期从光合作用角度探讨不同配比的氮、磷对水曲柳幼苗生产力的影响。结果表明:不同氮、磷配比对水曲柳的多个光合指标差异影响显著。在一定范围内随着施磷量的逐渐增加净光合速率(Pn)升高;施磷肥对提高水曲柳叶片光合作用能力有积极作用;磷胁迫使叶绿素含量降低且对水曲柳叶片的碳同化和光能利用产生负影响。 相似文献