接种联合固氮菌对毛竹实生苗生长的影响
Forest Research(1999)
Abstract
将从毛竹根际分离的2#菌株(多粘芽孢杆菌),12#、14#菌株(地衣芽孢杆菌)和从浙江淡竹根际分离的7#菌株(未最后确定种名),分别培养制成菌悬液,回接毛竹实生苗,进行人工控制条件下的无菌盆栽(沙培)试验.结果显示接菌能不同程度地提高毛竹幼苗成活率并促进其生长,尤其是对根鲜质量增加明显,增幅为44.1%~76.9%,分别达到显著(14#菌)和极显著(2#、12#、7#菌)水平.同时,接种联合固氮菌明显提高苗木体内的氮素含量,植株含氮量增幅达22%~38.1%.另外,统计分析表明:在无土著菌生长和竞争的条件下,幼苗期接菌处理比种子发芽期接菌处理具更显著的促进植株生长和提高植株含氮量的效果.
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Key words
Associated nitrogen fixation,Inoculation,Moso bamboo,Nitrogen fixing bacteria,Seedling growth
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