减量施肥对水稻生长·稻田水体氮磷含量的影响  

The Effects of Reducing the Amount of Using Fertilizer on Growth and Phosphorus Content in Paddy Water

作　　者：袁天泽 徐燕 余鸿燕 黄仁军 

机构地区：[1]重庆三峡农业科学院,重庆404001

出　　处：《安徽农业科学》2010年第8期3948-3950,共3页Journal of Anhui Agricultural Sciences

基　　金：国家"十一五"科技支撑计划(20087BAD10)

摘　　要：[目的]研究减量施肥对水稻生长,稻田水体N、P含量的影响。[方法]在当地习惯施肥和施用绿肥红浮萍的基础上,设减量施肥处理,测定各组处理的水稻农艺性状,产量,N、P利用率,稻田水中总N、P在各个生长时期的变化情况。[结果]从产量方面看,红浮萍+当地习惯减10%处理的产量较高,为8537.55kg/hm2,与当地习惯处理相当,但比当地习惯减10%处理、当地习惯减20%处理、红浮萍+当地习惯减20%处理分别增产16.1%、25.2%、16.3%;红浮萍+当地习惯减10%处理的N、P利用率较高,分别为40.8%、40.7%,而当地习惯减20%处理最低,分别仅为23.5%、20.8%;红浮萍+当地习惯减10%处理与当地习惯处理比较,稻田水N含量相当,而P含量较低。[结论]综合评价,红浮萍+当地习惯施肥量减10%处理可减少N、P的流失,且不影响水稻的产量。[Objective] The research aimed to study the effects of reducing the amount of using fertilizer on growth and phosphorus content in paddy water.[Method] On the basis of local customs fertilizer and using the green fertilizer red duckweed,the treatments of reducing the amount of using fertilizer were designed to apply in rice,the agronomic characters,yield and utilization ratio of Nitrogen and Phosphorus,the changes of total Nitrogen and Phosphorus in paddy water were determined.[Result] The yield of treatment of red duckweed ＋ less 10% of local customs were 8 537.55 kg/hm2,which was equivalent to that of treatment of local customs fertilizer,and compared with the less 10% of local customs fertilizer,less 20% of local customs fertilizer,and red duckweed ＋ less 20% of local customs fertilizer,the yield of red duckweed ＋ less 10% of local customs were increased 16.1%,25.2%,16.3%;utilization ratio of Nitrogen and Phosphorus of red duckweed ＋ less 10% of local customs were higher,they were 40.8% and 40.7% respectively,while that of less 20% of local customs fertilizer were 23.5%,20.8%;nitrogen in paddy fields water of red duckweed ＋less 10% local customs fertilizer was equivalent to local customs fertilizer treatment,but phosphorus was lower than it.[Conclusion] The treatment of red duckweed ＋ less 10% of local customs fertilizer treatment can reduce the loss of nitrogen and phosphorus,but also have no affects on rice yield.

关 键 词：减量施肥 水稻 N、P含量 

分 类 号：S511[农业科学—作物学]