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当前位置: 首页 > 文章 > 添加玉米和水稻秸秆对淹水土壤pH、二氧化碳及交换态铵的影响 应用生态学报 2008,19 (2) 345-350
Position: Home > Articles > Effects of maize and rice straw amendment on the pH,CO_2,and exchangeable NH_4~+ of submerged soil Chinese Journal of Applied Ecology 2008,19 (2) 345-350

添加玉米和水稻秸秆对淹水土壤pH、二氧化碳及交换态铵的影响

作  者：
叶文培;王凯荣;Johnson SE;谢小立
单  位：
中国科学院亚热带农业生态研究所;菲律宾国际水稻研究所
关键词：
玉米秸秆;水稻秸秆;土壤pH;CO_2含量;交换态铵
摘  要：
通过温室土壤培养试验,研究了不同添加量玉米和水稻秸秆对淹水土壤pH、CO2及交换态铵的影响.结果表明:在接近中性的土壤中加入秸秆可使土壤pH值降低,4g.kg-1玉米和水稻秸秆处理的土壤pH值均与对照差异显著(P<0.05),而1g.kg-1玉米和水稻秸秆处理与对照差异不显著(P>0.05).土壤溶液中的CO2含量随秸秆添加量的增加而增大,1g.kg-1玉米和水稻秸秆处理的土壤溶液CO2含量最大值分别为35.9%和31.9%(v/v),与对照(25.8%)差异达显著水平(P<0.05),但两者间差异不显著(P>0.05);4g.kg-1玉米和水稻秸秆处理的土壤溶液CO2含量最大值分别为54.2%和41.8%(v/v),与对照差异极显著(P<0.01),两者间差异也达显著水平(P<0.05).在不施氮肥的情况下,添加秸秆可降低土壤铵态氮浓度,且铵态氮浓度随秸秆添加量的增加而降低,不同添加量处理间差异显著(P<0.05);在施入氮肥的情况下,1g.kg-1玉米和水稻秸秆处理提高了土壤铵态氮浓度,而4g.kg-1玉米和水稻秸秆处理降低了土壤铵态氮浓度.无论是否施入氮肥,玉米和水稻秸秆处理的土壤铵态氮浓度差异不显著(P>0.05).
译  名：
Effects of maize and rice straw amendment on the pH,CO_2,and exchangeable NH_4~+ of submerged soil
作  者：
YE Wen-pei1,4,WANG Kai-rong1,2,Johnson SE3,XIE Xiao-li1(1Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125,China;2Institute of Agricultural Ecology and Environmental Health,Qingdao Agricultural University,Qingdao 266109,Shandong,China;3International Rice Research Institute,Los Banos,DAPO 7777,the Philippines;4Graduate University of Chinese Academy of Sciences,Beijing 100039,China)
关键词：
maize straw;rice straw;soil pH;CO_2 content;exchangeable NH_4~+
摘  要：
A greenhouse incubation test was conducted to study the effects of amendment with different amounts of maize and rice straws on the soil pH,CO2,and exchangeable NH4+ under continuous flooded condition.The results showed that in a near-neutral soil,straw amendment could decrease soil pH,with a significant difference(P<0.05) between the treatments of 4 g straws·kg-1 and control(CK),but no significant difference(P>0.05) between the treatments of 1 g straws·kg-1 and CK.The CO2 content in soil solution increased with increasing rate of straw amendment,with the peak value being 35.9% and 31.9%(v/v) in the treatments of 1 g maize straw·kg-1 and 1 g rice straw·kg-1,respectively.These two treatments had significantly higher CO2 contents(P<0.05) than CK,but no obvious difference between themselves(P>0.05).In treatments 4 g maize straw·kg-1 and 4 g rice straw·kg-1,the peak value of CO2 content was 54.2% and 41.8%(v/v),respectively,being significantly higher than that of CK(P<0.01),and significantly different between themselves(P<0.05).Under non-N fertilization,soil NH4+-Nconcentrationdecreased after straw amendment,and the increase of the amendment rate caused a further decrease of soil NH4+-N concentration,with a significant difference(P<0.05) between the doses of 1 and 4 g straw·kg-1.Under N fertilization,soil NH4+-N concentration increased after 1 g straw·kg-1amendment,but decreased after amendment with 4 g straw·kg-1.No significant differences were observed between maize straw and rice straw amendment regardless with or without N fertilization(P>0.05).

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