• ISSN 1008-505X
  • CN 11-3996/S
翁伯奇, 唐建阳, 应朝阳, 白雪峰, 熊焰, 杨涛, . 闽北山垄田稻萍鱼共生体系与萍体氮素循环利用效率研究[J]. 植物营养与肥料学报, 1998, 4(2): 138-144. DOI: 10.11674/zwyf.1998.0206
引用本文: 翁伯奇, 唐建阳, 应朝阳, 白雪峰, 熊焰, 杨涛, . 闽北山垄田稻萍鱼共生体系与萍体氮素循环利用效率研究[J]. 植物营养与肥料学报, 1998, 4(2): 138-144. DOI: 10.11674/zwyf.1998.0206
Weng Boqi, Tang Jianyang, Ying Zhaoyang, Bai XuefengAzolla, Fujiun AAS, Xiong Yan, Yang TaoJianyang, Fujian Prov. STUDY ON "RICE-AZOLLA-FISH" CROPPING ECOSYSTEM AND EFFICIENCY OF AZOLLA NITROGEN IN THE VALLEY PADDY FIELD OF NORTHERN FUJIAN[J]. Journal of Plant Nutrition and Fertilizers, 1998, 4(2): 138-144. DOI: 10.11674/zwyf.1998.0206
Citation: Weng Boqi, Tang Jianyang, Ying Zhaoyang, Bai XuefengAzolla, Fujiun AAS, Xiong Yan, Yang TaoJianyang, Fujian Prov. STUDY ON "RICE-AZOLLA-FISH" CROPPING ECOSYSTEM AND EFFICIENCY OF AZOLLA NITROGEN IN THE VALLEY PADDY FIELD OF NORTHERN FUJIAN[J]. Journal of Plant Nutrition and Fertilizers, 1998, 4(2): 138-144. DOI: 10.11674/zwyf.1998.0206

闽北山垄田稻萍鱼共生体系与萍体氮素循环利用效率研究

STUDY ON "RICE-AZOLLA-FISH" CROPPING ECOSYSTEM AND EFFICIENCY OF AZOLLA NITROGEN IN THE VALLEY PADDY FIELD OF NORTHERN FUJIAN

  • 摘要: 将稻-萍-鱼共生体系的综合耕作技术引入山垄稻田。试验结果表明:山垄稻田中草鱼、尼罗罗非鱼以红萍为饵食,其鲜鱼产量分别达3568kg/hm2和3702kg/hm2;中稻和再生稻产量分别达5710~6006kg/hm2和3478~3772kg/hm2,比施化学氮肥处理区分别提高689.0~1132.5kg/hm2和458.4~658.9kg/hm2。15N试验结果显示:在稻萍鱼体系中鱼体和水稻对红萍氮总利用率达52.8%~57.9%.而施用化学氮肥处理区的水稻对氮素利用率仅为33.5%。连续两年实施稻萍鱼共生体系耕作技术.山垄田土壤有机质平均提高0.15%,且整个耕作体系病情指数下降42.1%~50.7%.减少农药施用量,有助于生态环境改善,达到增产增收的目的。

     

    Abstract: The cropping technology of rice- azolla- fish ecosystem were applled intovalley paddy field. It was showed by the plot experiment that the grass fish and T.nilotica is 3568 and 3702kg/hm2 respectively, when the azolla was used as fish fodderin the valley paddy field. The yields of monocropping rice and the ratooning rice in theplot of rice -azolla-fish was 5710~6006kg/hm2 and 3478~ 3772kg/hm2, respectively,and they were higher as 689. 0 ~1132. 5kg /hm2 and 458. 4~ 658. 9kg /hm2 than thetreatment of applying chemical nitrogen fertilizer. It was showed that the totalefficiency of N-azolla is 52. 8%~57. 9% in the rice- azolla -fishecosystem and that only33. 5% in the treatment of applying chemical nitrogen ferti1izer by 15N- tracingexperiment. The rice-azolla-fish ecosystem had been applied for two years, the organicmatter in the soll from valley paddy field increased O. l5% and the index of diseasedecreased 42. 0% ~ 50. 7% in this cropping ecosystem. It was a good method forimproving eco-environment and reached to increasing both yield and income when thetechnblogy of cropplng ecosystem was applled successifully.

     

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