长期施用有机肥和化肥对土壤有机质和氮素的影响  

EFFECTS OF LONG-TERM APPLICATION OF ORGANIC MANURES IN COMBINATION WITH CHEMTCAL FERTILIZERS ON ORGANIC MATTER AND NITROGEN IN THE SOILS

作　　者：袁玲[1] 杨邦俊[1] 黄建国[1] 郑兰君[2] 刘学成[3] 

机构地区：[1]西南农业大学土化系,重庆630716 [2]武胜县农业局,四川武胜638400 [3]遂宁市农业局,四川遂宁629000

出　　处：《西南农业大学学报（自然科学版）》1993年第4期314-317,共4页Journal of Southwest Agricultural University

摘　　要：有机肥与化肥长期(7～9年)配合施用,可提高土壤有机质和全氮含量.在肥力较低的红棕紫泥上,有机质增加10.7%～11.9%,全氮提高18.3%～20.2%;在肥力较高的灰棕紫泥上,有机质也略有增加,为1.7%～4.4%。在提高稻田土壤有机质的作用中,有机氮与化肥氮桉1:1配施,效果最好,且细绿萍优于猪粪和胡豆青.故在申低产紫色水稻土上,稻田养萍,是培肥地力和节月巴高产的一个途径.In 3 long-term experiments,in which organic manures were applied to the paddy soils in comination with chemical fertilizers successively for 7—9 ycars,organic matter and total N increased by 10.7%—11.9% and 18.3%—20.2%,respectively,in the red brown purple soil with lower fertility. Organic matter also showed a slight increment (1.7%—4.4%) in the grey brown purple soil.The best result for increasing organic matter in paddy soils was achieved by applying organic manures (Azolla.filiculoide,pig waste or broad bean) and chemical fertilizers with a ratio of 1 orgnic N:1 chemical N.Therefore,culture of A.fliculoidein paddy soils is re- commended to improve their fertility,decrease the amount of chemical fertilizer used and obtain higher rice yield.

关 键 词：土壤有机质 有机肥 化肥 氮素 

分 类 号：S153.621[农业科学—土壤学]