Bray-Curtis distance coefficients indicated that the pesicidal plants in the Prefectures Qian Dond Nan and Qian Nan are most similar, and the least similarity exists between the Prefectures of Qian Dong Nan and Liu Pan Shui.

• Bray -Curtis距离系数表明黔西南和黔南两地区农药植物资源的相似性最大 ,黔东南和六盘水之间的相似性最小。