采用微区定位试验的方法,研究了长期施用含氯化肥对土壤养分和花生产量的影响.结果表明:与对照相比,长期施用含氯化肥0～40cm土层的土壤24年累积氯残留率平均为5.86%,土壤中含氯量平均为77.55kg·hm-2,土壤pH值降低幅度为1.7%～16%,土壤有机质增加了1.1%～2.7%,全氮增加了1.1%～2.7%,全磷增加了2.1%～13.0%,全钾增加0.2%～2.5%,碱解氮增加30.5%～92.3%,速效磷增加了100%～203%,速效钾增加了23.6%～46.2%.施用含氯化肥对花生有增加产量的作用,增产幅度为37.60%～92.07%.%Micro-plot experiment was carried out to study the effects of application of chlorine-containing fertilizers on peanut yield and soil in 2009. The results indicated that long -term application of chlorine -containing fertilizers caused chloride accumulation in soil in 24 years.In 0-40cm depth of soil, the cumulative residual rate of chloride was 5.86% in average,with the chloride content of 77.55kg·ha-1. The soil pH value decreased by 17%-16%. The OM increased by l.l%-2.7%, total nitrogen increased by l.l%-2.7%, total phosphorum increased by 2.1%-13.0%, total potassium increased by 2.1%-13.0%. And available nutrient in soil also increased definitely. The alkaline hydrolysis increased by 30.5%-92.3%,avail phosphorum increased by 100%-203%, avail potassium was increased 23.6%-46.2%. The application of chlorine-containing fertilizers onhanced peanut yield, with yield increase extent of 37.60%-92.07%.
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