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沼液对土壤有机质含量和肥效的影响

张无敌,尹芳,李建昌,刘士清,陈玉保,许玲,毛羽
(云南师范大学可再生能源材料先进技术与制备教育部重点实验室;生物能源持续开发利用教育部工程研究中心;云南省农村能源工程重点实验室,云南昆明650092)

摘要:试验研究了施用沼液对土壤改良及土壤有机质含量和肥效的影响。试验分为8个组.每组设4个重复;土壤处理分为灭菌和不灭菌2部分;青菜种植分为施用沼液与不施用沼液2部分。试验结果表明:施用沼液能够显著增加土壤有机质、氨态氮、速效钾、速效磷的含量,有利于调节土壤pH值。施用沼液对土壤有显著的改良效果。
    关键词:沼液;土壤;营养;蔬菜
    中图分类号:$216.4;S147.3 文献标志码:A 文章编号:1671—5292(2008)06-0045-03

Influence of biogas fluid on the organic matter content in soil and its fertilization effect
    ZHANG Wu_di,YIN Fang,LI Jian--ehang,LIU Shi—qing,CHEN Yu-bao,XU Ling,MAO Yu
   (Key laboratory of Advanced Technology and Process of Renewable Energy Materials,Ministry of Education;Engineering Research Center of Sustainable Development and Utilization of Biomass Energy,Ministry of Education;Provincial Key Laboratory of Rural Energy Engineering,Yunnan Normal University,Kunming 650092,China)
    Abstract:The experiment study has been carried out on the influence of biogas fluid on the Organic matter content in soil and its fertilization effect.The experiment was designed into eight groups,repeated four times four each group,the soils were set into two kinds which are respectively the sterilized one and the natural one;the vegetables were also set into two parts which depend on if bio-slurry is used as fertilizer.This experimental results showed that the biogas fluid could improve soil fertility,soil enzymes and soil microorganism quantity.The biogas fluid could also increase the content of soil organic matter the available P,NH4+-N,and the available K remarkably,and is helpful for adjusting the pH value.It showed that biogas fluid could improve soil greatly.
    Key words:biogas fluid;soil;nutrition;vegetable

沼肥是人畜粪便、秸秆等有机物经过厌氧发酵后产生的残留物,即沼渣和沼液。沼肥是一种养分全面、速缓肥效兼备的优质有机肥料,能显著地改善土壤环境,有效地调节土壤中的水、肥、气、热状况,促进土壤生态环境良性循环。为了进一步弄清沼肥改良土壤的机理.我们试验研究了青菜地施用沼液对土壤肥力的影响。

沼液对土壤有机质含量和肥效的影响



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