苏北中药材种植地土壤肥力衰退原因及其恢复对策

Causes of soil fertility decline upon cultivation of Chinese herbal medicine and counter-measures for improving soil fertility

论述江苏省射阳县洋马乡种植中药材 3 0几年来农田土壤肥力的变化 ,土壤有机质和氮、磷养分随药材种植年限增加而衰减的原因 .鉴于该乡中药材生产中轮作单调、施肥不合理、药材生物量的大部分有机物质输出农田生态系统 ,导致近年来多种药材产量下降、经济收益减少等问题 ,提出恢复该类农田土壤肥力的对策 .

We conducted a 30 years' comparative study on soil fertility dynamics in Sheyang county,Jiangsu province.The results showed that the contents of soil organic matter,N,and P declined with increasing cultivation time of Chinese herbal medicine.This was resulted from the improper rotations and fertilization.This paper also raised some countermeasures for the improvement of soil fertility.