摘要
以内蒙古浑善达克沙地土壤为研究对象,分析草原不同牧鸡密度及距离鸡舍不同距离对土壤的含水率,pH值,铵态氮,硝态氮,全氮,有机质及磷含量的影响.结果表明:放牧密度对土壤磷含量、硝态氮、铵态氮、全氮、含水率都存在显著影响,离鸡舍距离只对铵态氮和含水率存在显著影响.随着放牧密度的增加土壤磷含量变化趋势不明显,但在放牧密度为400只/hm2时土壤磷含量明显高于其他密度和空白;放牧后铵态氮含量有所下降;随着放牧密度的增加土壤硝态氮含量升高,放牧密度为800只/hm2时土壤硝态氮含量基本稳定且高于空白;放牧后土壤全氮总体有所下降,但在放牧密度为400只/hm2时土壤全氮含量总体比其他密度高,且接近空白;随着放牧密度的增加,含水率总体降低,放牧密度为200只/hm2时土壤含水率接近空白.
As the research object to Otindag sandy soil,the effect of different grassland animal husbandry and chicken density and distance the coop at different distances on the soil moisture content, pH value,ammonium nitrogen, nitrate nitrogen, total nitrogen, organic matter and phosphorus content is analyzed. The results show that： the grazing density of the soil phosphorus content, nitrate, ammonium nitrogen, total nitrogen and moisture are significantly affected, but distance away from the chicken coop only has impact on the presence of ammonium nitrogen and moisture. There is no obvious trend with increasing grazing density soil phosphorus content, However, grazing density of 400 hm^2 soil phosphorus content is significantly higher than other density and blank, and ammonium nitrogen content decreases after grazing; with the rise of the the grazing density, soil nitrate content increases. Grazing density of 800 hm^2 in soil nitrate content is basically stable and higher than the blank; there is an overall decrease of total soil nitrogen after grazing, but at grazing density 400 hm^2, the overall total soil nitrogen content is higher than other density and nearly blank; With the increase of the density grazing, the overall moisture content reduced, and when grazing density is 200 hm^2, the soil moisture content is close to blank.
出处
《沈阳化工大学学报》
CAS
2013年第1期34-41,共8页
Journal of Shenyang University of Chemical Technology
基金
中国科学院知识创新工程重要方向项目(KZCX-YW-Q1-13)
关键词
放牧鸡
土壤理化性质
铵态氮
硝态氮
有机碳
全氮
速效磷
grazing chicken
soil physical and chemical properties
ammonium nitrogen
nitrate nitrogen
organic carbon
total nitrogen
rapidly-available phosphorus
