EFFECT OF MYCORRHIZAL INFECTION ON GROWTH AND NITROGEN UPTAKE OF SEVERAL GREEN MANURE CROPS GROWN UNDER EXCESS FERTILIZATION

由于与捕获物伴生的AM真菌在吸收土壤中积累的氮、磷等过量养分方面具有重要作用，因此在过量施肥条件下，研究了AM真菌与田菁、田菁、高粱、燕麦等作物的相互作用。接种聚合球菌菌根显著促进了这些作物的生长和养分吸收，尤其是在较高氮素水平下生长的十字花科作物。在接种了Gl的花生作物上也观察到了积极的效果。聚合体。不同AM菌株接种菌根的促生效果存在差异。为了评价作为绿肥的捕获物作物对后茬作物(Crotalaria spectabilis、Sesbania rostrata和Vicia villosa)生长和氮素吸收的潜力。通过种植这些作物，证实了诸如芥菜和高粱等作物的生长和氮素吸收的增加。AM孢子的体外培养繁殖技术目前正在进行中。

Since AM fungi associated with catch crops could play an important role to absorb the excessive nutrients such as nitrogen and phosphorus accumulated in the soil, interactions between AM fungi and the crops including Crotalaria, Sesbania, Sorghum, and Avena were investigated under excess fertilization. Mycorrhizal inoculation with Glomus aggregatum drastically promoted the growth and nutrient uptake of those crops, especially in Crotalaria juncea grown under higher nitrogen level. The positive effect was also observed in peanut crop inoculated with Gl. aggregatum. There was a difference in promoting effect of mycorrhizal inoculation among the tested AM strains. To evaluate the potential of catch crops incorporated as green manures on growth and N uptake of the following crop, Crotalaria spectabilis, Sesbania rostrata, and Vicia villosa were investigated. The increases in growth and nitrogen uptake of the following crop such as tendergreen mustard plant and sorghum by incorporation of these crops were confirmed. Propagation techniques of AM spores using in vitro cultures are now in progress.