论文部分内容阅读
粗柠檬实生苗经“泡囊一丛枝”菌根真菌的接种和施用磷矿粉作盆栽四个处理,用以测验菌根对柑桔吸收难溶性磷肥的效应。观察表明,中柑1号菌根菌种对粗柠檬的感染率可达96％以上。在四个处理中,接种菌根加施磷矿粉的植株生长反应最好,其枝茎长度和整株鲜重增长最快,分别为单施磷肥植株的2.9和4.3倍以上,主干粗增加2倍左右,其整株含磷量增加7倍。植株的干物质重,叶片含磷量和绝对含磷量等都比其他三个处理明显增多。单施磷肥的植株生长和含磷量与对照的差异不显著。结果证明柑桔根系必需形成内生菌根才能增强对难溶性磷肥的吸收。
The crude lemon seedlings were inoculated with “a cluster of shoots” mycorrhizal fungi and treated with phosphate rock as potted plants to test the effect of mycorrhiza on citrus absorption of insoluble phosphate fertilizer. Observation shows that the No. 1 mycorrhizal species of crude lemon infection rate of up to 96%. In the four treatments, the plantlets with inoculated mycorrhizal fungi and phosphate rock powder had the best growth response, the fastest growth of stem length and whole plant fresh weight, which were 2.9 and 4.3 times higher than that of single phosphate fertilizer plant, About 2 times, the whole plant phosphorus content increased 7 times. Plant dry weight, leaf phosphorus content and absolute phosphorus content than the other three treatments significantly increased. The difference of plant growth and phosphorus content with phosphate fertilizer alone was not significant. The results show that citrus roots need to form endogenous mycorrhizae in order to enhance the absorption of insoluble phosphate fertilizer.