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利用经特殊培养的西澳粘滑菇菌种,人工接种在尾叶桉幼苗根部,35d后有60%的幼苗根部都长出1~2个子实体,经鉴定,该子实体为原接种菌。菌根感染率检查结果表明,有80%幼苗形成菌根。生长8个月的幼苗其平均树高比未接种苗增加52.2%,地径增加29.4%,地上及地下部分生物量(干重)分别比对照增加268%及214.3%。西澳粘滑菇不仅在华南地区桉树上可以完成菌根合成,而且对幼树生长的增产效果十分明显,是华南地区桉树的优良菌根菌。 相似文献
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稳态营养对湿地松容器苗Pt外生菌根形成及生长效应研究 总被引:5,自引:2,他引:3
在非控制条件下,按稳态矿质营养理论与技术,对接种与不接种Pt外生菌根菌剂的湿地松芽苗,分别以0%、5.3%、6.4%、7.5%营养物相对添加速率进行施肥处理。通过观测苗木生长,根系和菌根发育,生物量积累,以及叶片营养元素和叶绿素含量,研究湿地松芽苗Pt外生菌根形成的外界营养水平及生长效应。结果表明,Pt接种苗平均株同、地径、株干重基本上随营养物添加速率提高而提高,其中7.5处理比0处理分别提高26 相似文献
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用球囊霉属VA菌根菌制成的菌剂接种黎蒴实生苗,与对照相比,株高4个月以后增加52.99%。株高、地径和根部干重8个月以后分别增加75.93%、30.67%和71.75%,均达到极显著差异水平。在接种的植株根部可发现VA菌根特有的泡囊和从枝结构。试验结果表明,VA菌根菌对黎蒴的生长有显著的增效作用。 相似文献
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Chunjie Tian Xingyuan He Yang Zhong Jiakuan Chen 《Forest Ecology and Management》2002,170(1-3):307-312
Through biological inoculation technology, the joint symbiosis of Tibetan seabuckthorn (Hippophae tibetana) in pure culture was identified and the effects of dual inoculation with Frankia and mycorrhizal fungi on the host plants in pot cultures were investigated. The results obtained from the comparative study showed that H. tibetana could form nodules and VA mycorrhiza both in pot and pure cultures. VA mycorrhizae and Frankia can stimulate the growth and the nitrogen fixation ability of host plants, respectively, yet the stimulation of the dual inoculation on the growth and nitrogen fixation ability of the host plants was more significant (p<0.05): stronger nitrogen-fixing ability, higher VA mycorrhizal development and better growth of seedlings in VAH and HR16 dual inoculation. 相似文献
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生物制剂对沙地樟子松造林成活率及根系生长影响的研究 总被引:2,自引:0,他引:2
采用Pt菌剂、ABT生根粉、HRC吸水剂、丰产素等生物制剂处理2年生樟子松苗木,在内蒙古加格达齐进行了田问造林试验。并对樟子松造林成活及地下根系生长效应进行了研究,观测苗木成活率、根系生长等因子。结果表明:Pt菌剂3号ABT生根粉制剂显著地提高了樟子松成活率,它分别比对照高29.3%和23.6%,也促进了根系的生长,特别是细根的增加。回归分析表明苗木细根长度与苗木成活率呈显著正相关,说明生物制剂提高成活率是通过增加细根量来实现的。表3参10。 相似文献
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通过非灭菌土盆栽接种试验,观察了Glomus mosseae(GM)、G.intraradices(GI)、G.aggregatum(GA)和G.atunicatum(GE)4种AM真菌对油桐幼苗生长和氮磷吸收的影响,结果表明接种GM、GI和GE后菌根侵染率显著提高,侵染率分别为77.4%、92.3%和96.7%,比对照分别提高20.4%、43.5%、50.4%。接种GA与对照无显著差异;接种GM和GI后植株的干质量增加,而接种GA和GE对全株及各器官干质量影响不明显;接种4种真菌对油桐幼苗的氮素营养影响不大;接种GM、GI和GE显著提高了根部磷含量。综合考虑,接种GM效果最好。 相似文献
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以香椿(Toona sinensis)、秋枫(Bischofia javanica)实生种子苗为试验材料,研究干旱胁迫下丛枝菌根化香椿、秋枫幼苗叶片质膜透性、游离脯氨酸含量及超氧化物歧化酶(SOD)活性的变化.结果表明:随着干旱胁迫程度加重及胁迫时间延长,香椿、秋枫幼苗叶片质膜透性、游离脯氨酸含量呈增加趋势,SOD活性在胁迫处理4天时明显增加,之后随着胁迫时间延长无明显变化趋势.中度干旱胁迫(田间持水量40%)处理20天时,菌根化香椿、秋枫幼苗叶片质膜透性、游离脯氨酸含量及SOD活性均高于非菌根化苗.这说明,接种丛枝菌根能有效促进香椿、秋枫幼苗生理抗旱性,且干旱胁迫程度越重效果越显著. 相似文献
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通过非灭菌土盆栽接种试验,观察了Glomus versiforme(GV)和Glomus mosseae.(GM)两种AM真菌对油茶幼苗生长和氮磷吸收的影响,结果表明丛枝菌根的形成对油茶幼苗的生长以及氮磷的吸收均有影响。在接种后7个月时,GV和GM均可显著提高油茶的菌根侵染率,分别为56.5%和72.4%,比对照分别提高了80.5%和131.3%;GV对植株苗高和地径的影响与对照株相比未见差异,但却极大地增加了根系的干物质量,接种GM显著增加了植株高度和茎粗,对地上部分和根系的干物质量都有显著的促进作用;两种真菌均降低了油茶幼苗全株的氮含量,对全株的磷含量有一定程度提高,GV显著提高了油茶幼苗根部的氮含量,而降低了幼苗茎、叶中的氮含量:接种GM和GV均增加了根、茎中的磷含量,而降低了叶片中的磷含量。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(1-4):103-112
The presence of humus was evaluated as a factor affecting the establishment and development of mycorrhiza in Scots pine (Pinus sylvestris L.) and lodgepole pine (Pinus contorta ssp. latifolia Engelm.) during the first growing season after outplanting on two clear‐cut sites. Humus proved to be of minor importance for the formation of mycorrhizae. Instead, the colonisation showed a patchy pattern, indicating spatial variation in the amounts of active inoculum. This variation may reflect differences in soil microhabitat and perhaps the mycorrhizal distribution in the logged stands. Total mycorrhizal short‐root frequency increased from 10% at outplanting in June to 40–65% in October. The nursery mycorrhiza accounted for 80–95% of the total mycorrhiza at the end of the investigation. However, by this time 60–90% of the seedlings had, to some extent, indigenous mycorrhiza with fungi from the clear‐cut sites. Piloderma croceum tended to be formed at a higher rate in the presence of humus than in its absence while another mycorrhizal type increased faster in the mineral soil. 相似文献
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INTR0DUCTl0NCultivatingseedlingswithmycorrhizaistmiversallyacknowledgedasthethirdkeyelementincultivatioroffastgrowingandhigl1yeildforests.Seedlingswithmycorrhizatakenbymanycountfiesoftheworldasoneoftheeffectivcmeasurestthichcanincreaseyieldsin'agricultUreandforestry,hasbeenpaidclosedattentionextensivelyandutilizedinforestproduction.Inordertoenhancetechnologylevelofseedlingcultivationandsurvivalrateofplanta-tion,weestablishedaworkplaceintheCentraINursery,Chao3uanF0restBureautomakemycorrhi… 相似文献