秸秆还田情况下蚯蚓活动对稻麦轮作土壤磷素的影响  

Effects of Earthworm Activity on Soil Phosphorus in Wheat- Rice Soil Receiving Corn Straw

作　　者：王霞[1] 胡锋[1] 李辉信[1] 沈其荣[1] 王丹[1] 刘永刚[1] 

机构地区：[1]南京农业大学资源与环境学院,江苏南京210095

出　　处：《农业环境科学学报》2004年第2期341-344,共4页Journal of Agro-Environment Science

基　　金：国家自然科学基金重点项目(39830220)

摘　　要：通过长期田间小区试验研究发现,在稻麦轮作土壤中,蚯蚓活动并不降低土壤全磷含量,有效磷含量呈直线上升趋势。在秸秆混施时,蚯蚓活动提高了树脂磷、NaOH磷含量,而超声磷含量降低,就总体而言,易于作物吸收的无机磷(如树脂磷和NaHCO3磷)含量有所升高。We have studied effects of earthworm activity on soil phosphorus in a wheat- rice soil in enclosures for a long period. It was found that earthworm had no significantly influence on total P, but available P raised steadily. When corn straw was incorporated into surface soil, both Resin- P and NaOH- P increased, while supersonic- P decreased. In a simply word, the content of inorganic phosphorus absorbed easily by crop increased such as Resin- P and NaHCO3- P.

关 键 词：秸秆还田 蚯蚓 稻 麦 轮作 土壤 磷素 磷酸酶 

分 类 号：S511[农业科学—作物学] S512.1