OALib Journal期刊
ISSN: 2333-9721
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丛枝菌根真菌与复硝酚钠在番茄育苗中的应用
DOI: 10.3724/SP.J.1145.2012.00843, PP. 843-846
Keywords: am真菌,复硝酚钠,番茄,育苗,结实率,土壤碱性磷酸酶
Abstract:
研究了温室盆栽条件下接种丛枝菌根(arbuscularmycorrhizal,am)真菌以及添加复硝酚钠稀释液对番茄育苗的影响.结果发现,在灭菌条件下接种am真菌处理番茄根系am真菌侵染率自2周起即保持在45%左右,且其地上部生物量在3周后一直显著高于不接菌对照(p<0.05),在接菌基础上添加1.8%复硝酚钠不同倍数(1×106、5×106和10×106)稀释液对番茄生长具有一定促进作用,其中以稀释5×106倍效果最佳;育苗6周后将对照、接种am真菌处理以及在接菌基础上添加1.8%复硝酚钠5×106倍稀释液的幼苗各2株分别移栽到未灭菌土壤中,继续培养16周后发现,对照苗被土著am真菌侵染,但结实率为0;菌根化苗am真菌侵染率与土壤碱性磷酸酶活性均显著升高(p<0.05),番茄结实率达到50%;添加复硝酚钠稀释液的菌根化苗am真菌侵染率显著高于普通菌根化苗(p<0.05),且与对照苗相比,土壤ph显著降低、电导率显著升高(p<0.05),番茄结实率达到75%.结果表明,接种am真菌对番茄育苗具有较好的促进作用,在接菌基础上添加1.8%复硝酚钠5×106倍稀释液对番茄幼苗生长和移栽后结实均具有更好的促进效果,具有推广应用价值.图1表2参19
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