控氮节磷施肥对鄱阳湖区水稻养分吸收及产量的影响  

Effect of the Fertilization Model of N Controlling and P Saving on Nutrient Uptake and Rice Yield

作　　者：徐昌旭[1] 彭春瑞[1] 叶宗国 陈先茂[1] 刘卫东 苏全平[1] 

机构地区：[1]江西省农业科学院土壤肥料与资源环境研究所,南昌330200 [2]江西省庐山区农业局,九江332005

出　　处：《中国农业气象》2010年第S1期53-56,共4页Chinese Journal of Agrometeorology

基　　金：国家"十一五"科技支撑计划项目(2007BAD87B08)

摘　　要：鄱阳湖区是江西主要的水稻产区,以双季稻为主。在双季稻单季高产推荐施肥水平(N∶P2O5∶K2O=180∶90∶150kg/hm2,100%化肥)基础上,进行了化肥减量后与猪粪配施、孕穗期增施氮钾肥、添加肥料增效剂等控氮节磷施肥对水稻养分吸收和产量影响的试验。结果表明,在养分等量条件下,80%化肥+猪粪处理较之100%化肥处理,早晚两季稻谷总量增加93kg/hm2、增长0.74%;化肥减量20%后,在穗期增施N、K养分,或添加肥料增效剂,早稻产量有所增加,晚稻有所减产,但全年稻谷产量基本持平。控氮节磷施肥均能明显提高水稻养分利用率。Poyang lake region,a main rice-production area of Jiangxi province,is mainly a double cropping rice region.On the basis of current recommended fertilization in single season which N∶P2O5∶ K2O is 180∶90∶150 kg/ha,an experiment of N-controlling and P-saving fertilization model which was mineral fertilizer combined with pig manure,increasing N and K fertilizer before heading date and applicating fertilizer synergist was carried out.The results showed that in the condition of equal nutrient,compared with 100% F treatment,the total double cropping rice yield of 80% F and pig manure increased 93 kg/ha,increased by 0.74%.In the condition of decreasing 20% fetilizer,increasing N and K fertilizer or adding fertilizer synergist at the heading date,the early rice yield increased to some extent,and the late rice yield decreased to some extent,but the total both early and late rice yield did not change.Then the efficiency of nutrient was significantly increased by controlling N and saving P fertilizer.

关 键 词：水稻 施肥 控氮节磷 鄱阳湖区 

分 类 号：S511[农业科学—作物学]