Paper analyzes four biological effect of arbuscular mycorrhiza including promote plant growth enhance absorption of mineral nutrition , improve water metabolism and resolve the problem of re - inseminator in fruit tree mechanisms of four arbuscular mycorrhizal biological effect are explained . as well as paper brings forward the arbuscular mycorrhizal necessity in fruit tree 文章分析果树丛枝菌根生物肥料的四大生物效应，即促进生长、增强矿质营养的吸收、改善水分、解决果树重茬及其机理，提出丛枝菌根在果树应用中的必要性。
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