Field experiment was conducted to study the effect of applying organic matter in wind blown soil on microbial biomass and enzyme activity.The results showed that microbial biomass and enzyme activity keep dynamic chan...Field experiment was conducted to study the effect of applying organic matter in wind blown soil on microbial biomass and enzyme activity.The results showed that microbial biomass and enzyme activity keep dynamic changes during wheat growing season in wind blown soil,and reached the peak level in wheat booting stage.Compared with chemical fertilizer,all the other treatments could increase the microbial biomass in different degree,the same as catalsae and alkaline phosphatase activity,But urease activity was slightly difference from them.展开更多
通过不同的试验设计,3年间对风沙土进行秸秆等有机物料培肥,研究其结合态腐殖质中胡敏酸含量与E4/E6的变化,结果表明,不同有机物料培肥均能提高风沙土腐殖质中胡敏酸的含量,根据2000年测定结果,与CK相比,提高幅度在0.02～0.17 C g/kg之...通过不同的试验设计,3年间对风沙土进行秸秆等有机物料培肥,研究其结合态腐殖质中胡敏酸含量与E4/E6的变化,结果表明,不同有机物料培肥均能提高风沙土腐殖质中胡敏酸的含量,根据2000年测定结果,与CK相比,提高幅度在0.02～0.17 C g/kg之间,但胡敏酸与腐殖质的比值,随着培肥年限的增加,与CK处理比较,有降低的趋势,降低幅度在0.17％～2.23％之间。胡敏酸的E4/E6在有机物料处理间变化规律不明显,但其值都大于CK,随培肥年限的增加,处于动态的变化。展开更多
基金Heilongjiang Province Science Plan Project( 960 67)
文摘Field experiment was conducted to study the effect of applying organic matter in wind blown soil on microbial biomass and enzyme activity.The results showed that microbial biomass and enzyme activity keep dynamic changes during wheat growing season in wind blown soil,and reached the peak level in wheat booting stage.Compared with chemical fertilizer,all the other treatments could increase the microbial biomass in different degree,the same as catalsae and alkaline phosphatase activity,But urease activity was slightly difference from them.
文摘通过不同的试验设计,3年间对风沙土进行秸秆等有机物料培肥,研究其结合态腐殖质中胡敏酸含量与E4/E6的变化,结果表明,不同有机物料培肥均能提高风沙土腐殖质中胡敏酸的含量,根据2000年测定结果,与CK相比,提高幅度在0.02～0.17 C g/kg之间,但胡敏酸与腐殖质的比值,随着培肥年限的增加,与CK处理比较,有降低的趋势,降低幅度在0.17％～2.23％之间。胡敏酸的E4/E6在有机物料处理间变化规律不明显,但其值都大于CK,随培肥年限的增加,处于动态的变化。
