Cu^(2+)对花生根土系统和地上部性状的影响  

Effect on Root-soil System and Underground Parts Characteristics with Cu^(2+) Density of Peanut

作　　者：周苏玫[1] 郭俊红 白雪峰[1] 李智敏[1] 闫旭霞[1] 

机构地区：[1]河南农业大学农学院,河南郑州450002 [2]南阳市农业科学研究所,河南南阳473000

出　　处：《华北农学报》2003年第4期76-78,共3页Acta Agriculturae Boreali-Sinica

基　　金：河南农业大学自然科学基础研究项目

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(<200mg/kg)下表现增加,超过200mg/kg后均下降;但根瘤数在Cu2+浓度为50mg/kg时最多。地上部性状和产量性状均在Cu2+浓度为100mg/kg时表现最好,产量最高。The results showed: The soil enzyme activity on root-soil system, the roots properties and the upside plant properties had different reaction on different Cu^(2+)′s concentration.The vitalities of soil urease and amylophosphorylase dropped with the Cu^(2+)′s density increasing.The vitality, volume and dry weight of roots were improvted with Cu^(2+)′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.

关 键 词：CU^2+ 花生 根土系统 地上部份 生产性状 影响因素 

分 类 号：S565.2[农业科学—作物学]