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用~(32)P示踪法研究了在新疆石灰性土壤上,接种两种菌根,在4个施磷等级下对玉米的磷素营养和磷肥利用率的影响。结果表明,施磷水平为0,9.5,19和38mgP/kg±时,接种Glomus mosseae都能明显增进玉米对磷素的吸收,促进其生长发育,提高磷肥的利用率;接种Sclerocystis sinuosa仅在施磷量为38mgP/kg土时,对玉米的生长和磷肥利用率有明显效果。VA菌根还能大大提高后作玉米对残留磷肥的吸收利用。
The effects of phosphorus in maize and phosphorus utilization rate under four phosphorus application levels were studied by ~ (32) P tracer method in Xinjiang calcareous soil. The results showed that inoculation of Glomus mosseae could significantly increase the uptake of phosphorus by maize and promote its growth and development and increase the utilization rate of phosphate fertilizer. When inoculated with Sclerocystis sinuosa, The phosphorus content of 38mgP / kg soil, the growth of corn and phosphorus fertilizer have a significant effect. VA mycorrhizal can greatly improve the absorption of residual phosphate fertilizer corn use.