摘要： 试验表明,花生根际土壤的酶、根系性状和地上部性状对土壤中Cu²⁺浓度的反应不同.外施不同浓度Cu²⁺均使根际土壤的脲酶、磷酸酶的活性受到抑制.花生根系活力、根体积和根干重在适量铜浓度(＜200 mg/kg)下表现增加,超过200 mg/kg后均下降;但根瘤数在Cu2+浓度为50 mg/kg时最多.地上部性状和产量性状均在Cu²⁺浓度为100 mg/kg时表现最好,产量最高.

关键词: 花生, Cu2+, 土壤酶活性, 根系性状, 地上部性状

Abstract: The results showed: The soil enzyme activity on root-soil system, the roots properties and the upside plant properties had different reaction on different Cu²⁺′s concentration.The vitalities of soil urease and amylophosphorylase dropped with the Cu²⁺′s density increasing.The vitality, volume and dry weight of roots were improvted with Cu²⁺′s density increasing, it would dropped at the density 200 mg/kg beyond. But the number of roots tumer was the most of all concentrations at 50 mg/kg. The upside plant properties and yield properties were very well at 100 mg/kg.

Key words: Peanut, Cu²⁺, Soil enzyme, Roots properties, Upside plant properties

中图分类号: 

• S565.2