稻草还田对土壤性状及水稻产量的影响  

THE EFFECT OF RETURNING STRAWS INTO PADDY FIELDS AS FERTILIZER ON SOIL PROPERTIES AND RICE YIELD

作　　者：高明[1] 魏朝富[1] 陈世正[1] 

机构地区：[1]西南农业大学资源环境学院

出　　处：《西南农业大学学报（自然科学版）》1995年第5期436-439,共4页Journal of Southwest Agricultural University

基　　金：农业部"八;五"攻关课题

摘　　要：对稻草还田量和方式的研究表明，每ｈｍ￣２翻压６７５０ｋｇ稻草还田，有利于土壤微团聚体的形成，改善土壤物理状况，提高土壤有机质、氮、磷、钾和有效硅的含量，增产１１．７６％，覆盖后翻压４５００ｋｙ／ｈｍ￣２稻草还田次之。Some experiments were carried out to study the effects of different quantites of strawsretumed to paddy fields as fertilizer anti of the different ways of returning, The resultsshowed that the rice straw (6750 kg/ha)ploughed into soil could significantly promote theformation of soil microaggregates,improve soil physical properties and increase the con-tents of oil organic matter,nitrogen,phosphate, potassium and effective silicon. Theyield was increased by 11.76%. The effects of rice straw(4500 kg/ha) ploughed into soilafter mulching were not so good as that mentioned above. The order of increasing yield ofrice was the rice straw ( 6750 kg/ha ) by ploughing > the rice straw(4500 kg/ha)byploughing after mulching>the rice straw(4500 kg/ha) by mulching.

关 键 词：水稻 产量 土壤成分 土壤肥力 稻草还田 

分 类 号：S511.106.2[农业科学—作物学] S141.4