有机无机肥配施对红壤稻田氮素形态及水稻产量的影响  

Effect of Organic Manure Applied Combining with Inorganic Fertilizer on Nitrogen Conformation and Yield of Rice in Red Soil Paddy Field

作　　者：李冬初[1] 李菊梅[1] 徐明岗[1] 秦道珠[1] 申华平[1] 

机构地区：[1]中国农业科学院红壤实验站,湖南祁阳426182

出　　处：《湖南农业科学》2004年第3期23-25,31,共4页Hunan Agricultural Sciences

基　　金：十五"国家重点科技攻关课题(2001BA508B14)

摘　　要：在湘南丘陵区红壤稻田上进行了有机无机肥配合施用对田间氮素动态、水稻氮素利用率的影响及增产效应的试验,结果表明,有机无机肥配合施用,既能快速提高稻田有效氮含量,又能长久保持土壤氮素含量,提高氮素利用率。早稻有机无机肥配合施用处理产量要高于单施有机肥处理,也高于单施化肥处理,但各处理之间无显著差异。晚稻有机无机肥配合施用高于单施有机肥处理,显著高于单施化肥处理。单施化肥处理早、晚稻氮肥利用率分别为33 50%、22.88%;单施有机肥处理早晚稻的氮素利用率分别为41.04%、32.40%;有机无机肥配合施用早晚稻氮素利用率分别为40.07%、35.60%。Dynamic of Nitrogen in paddy field, nitrogen using efficiency and nitrogen on rice yield were studied in hilly red soil paddy field in south of Hunan provinces after organic manure applied combining with inorganic fertilizer. The results showed. organic manure applied combining with inorganic fertilizer can increase and retain nitrogen content in paddy soil, nitrogen use efficiency increased also. For early rice, yield of rice grain in NPKM were higher than that in M and NPK, but there were not significant difference among these treatments. For late rice, yield of rice grain in NPKM treatment were higher than that in M treatment and significant higher than that in NPK treatment. Nitrogen use efficiency was 33.5%(early rice),22.8%(late rice) in NPK treatment and was 41.04%(early rice), 32.4%(late rice) in M treatment 40.07% (early rice),35.6%(late rice) in NPKM treatment respectively.

关 键 词：有机无机肥 氮素利用率 增产效应 水稻 

分 类 号：S147.4[农业科学—肥料学] S158.2[农业科学—农业基础科学]