摘要
在国家紫色土肥力与肥料效益监测基地上,研究了水稻—小麦轮作中,长期施用钾肥对紫色土钾素含量变化及钾肥产量效应的影响。结果表明,长期施钾明显提高稻麦产量,维持紫色土有效钾的平衡;长期秸秆还田并配施化学钾肥是维持紫色土钾库平衡的有效措施。
Effects of longterm K application on ricewheat yield and dynamics of soil K content in the rotation of ricewheat were studied in the National Purple Soil Fertility and Fertilizer Efficiency Monitored Base.The results showed that ricewheat yield were increased obviously by longterm K application,the balance of the available K in purple soil was maintained.A joint application of crop straw and chemical K fertilizer is more effective to keep the balance of K in purple soil.
出处
《西南农业学报》
CSCD
2003年第3期53-56,共4页
Southwest China Journal of Agricultural Sciences
