摘要
以96-D-10水稻为供试作物,在宁夏引黄灌区灌淤土上,研究以沼渣为主要原料的有机无机配方肥对水稻产量和经济效益及环境的影响。结果表明:与农民习惯施肥处理(PF)相比,配方肥Ⅰ、Ⅱ、Ⅲ处理分别增产1.8%、4.6%、5.0%,配方肥Ⅱ最高达到1556.7元/hm2,配方Ⅰ最低,只有943.1元/hm2;追肥前后各处理稻田渗漏水中总氮含量有明显变化,但变化趋势不一致,农民习惯施肥处理追肥后稻田渗漏水中总氮迅速升高,最高达25.16mg/L,配方肥Ⅰ、Ⅱ、Ⅲ处理分别为18.46、17.22和24.70mg/L,从不同层次稻田渗漏水看,总氮浓度依次顺序为30-60cm>0-30cm>60-90cm>90-150cm;收获后,0～150cm以内土壤无机氮累积量PF2最低仅为33.19kg/hm2,FP最高为61.18kg/hm2,是其他处理的1.2～1.8倍。综合以上各因素,通过试验水稻合适的配方肥为配方Ⅱ(含沼渣35%、N 20%、P2O510%),施用量为750kg/hm2,并补施重过磷酸钙(含P2O546%)97.8 kg/hm2。
Influence of biogas formula fertilizer on the rice yield and soil environment were studied through experiment of 3 biogas formula fertilizers.The results showed that rice yield and benefit of formula 1,2,3 compared with conventional fertilization,increased by 1.8~4.8%,formula 2 deceased input by 1545 Yuan per hectare that is the best among 3 biogas formula fertilizers.Total nitrogen of different soil depth in groundwater of paddy filed（TNSDGPF） changed greatly under different fertilization treatment.TNSDGPF increased after fertilization,differences among fertilization treatments were significant.That was conventional fertilizerformula 3 formula 1 formula.The application of biogas formula fertilizer was prevented the nitrogen movement in groundwater of paddy filed.The application biogas formula fertilizer prevented soil Nmin from movement down.The above explaining that formula 2 could replace conventional fertilization,which was the best one among 3 biogas formula fertilizer.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2012年第12期182-185,共4页
Journal of Arid Land Resources and Environment
基金
国家水体污染控制与治理科技重大专项"黄河上游灌区农田退水污染控制与湿地生态修复关键技术研究与示范"(2009ZX07212-004-2)
宁夏回族自治区环境保护科学技术研究项目"规模化养殖污染控制与废弃物利用技术研究与集成示范"(20100802)资助
关键词
沼渣配方肥
水稻
产量
环境
biogas formula fertilizer
rice
yield
environment
