Ning'er County, Pu'er City to achieve zero growth in the use of chemical fertilizers and p
\u0026 nbsp; In recent years, the development concept of \innovation, coordination, green, openness, and sharing\ in Pu'er City in Pu'er City in Pu'er转方式、稳粮增收可持续”为工作主线，深入推进科学