【摘要】 为探究辣木园种草养鸡对土壤养分的影响，对轮牧及一天一次补饲方式放养的园地土壤养分及重金属元素含量进行测定，并对土壤重金属污染情况进行评价。结果表明：轮牧放养对土壤pH影响无显著差异，土壤pH呈缓慢下降趋势，pH值介于4.4～4.8，放养密度越大，土壤pH下降越明显；对土壤养分含量的影响不显著，但放养密度对土壤有效磷和土壤碱解氮含量有显著影响。与放养前相比，放养1批、2批的土壤养分含量都有不同程度的缓慢增加，放养3批时，土壤N、P、K含量恢复到放养前水平。通过单因素污染指数分析和内梅罗污染指数评价，轮牧放养中1区、2区、3区均未有对土壤造成污染，属于安全级别。更多还原

【Abstract】 In order to study the influence of chicken raising in Moringa Garden on soil nutrient content, the soil nutrients and heavy metal elements were monitored in rotation grazing and supplementary feeding soil, and the heavy metal pollution was evaluated by single factor pollution index analysis and Nemerow pollution index method. The results showed that Moringa-Herbage-Chicken mode had a slow decreasing trend for soil pH,ranging from 4.4 to 4.8,and the pH decreased more obviously with the increasing stocking density. However,compared with the soil nutrients before stocking,the soil nutrients in the first and second batches increased slowly to varying degrees,and the soil N,P and K contents in the third batch returned to the levels before stocking.According to the single factor pollution index analysis and nemerow pollution index evaluation,zones 1,2 and 3 in Moringa-Herbage-Chicken model did not pollute the soil,which belonged to the safe level.更多还原