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Effects of Azolla spp.Culture with Early Rice on Absorptions of Nitrogen and Phosphor in Paddy Field and Increase of Rice Yield
Author(s): 
Pages: 16-18
Year: Issue:  1
Journal: Hunan Agricultural Sciences

Keyword:  Azolla spp.AzoUa spp. culture in paddy fieldsurface water in paddy fieldyieldsoil fertility;
Abstract: 田间试验研究了早稻套萍对降低稻田表面水养分浓度、增加水稻产量和土壤肥力的影响.结果表明:稻田套萍能够有效降低表面水总氮、总磷的浓度.7 d内总氮去除率为30.0%,总磷去除率为56.8%;同时,水稻的成穗率、穗实粒数和结实率得到提高,产量也大有增加.根据监测期间红萍的平均氮磷含量、日增长速度以及稻田基肥施用后表面水总氮和总磷浓度计算,套种红萍约需46 d和12 d可完全消纳表面水中的氮和磷;稻田套...
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