EFFECTS OF PLANTING DENSITY AND CROPPING PATTERN ON THE DRY MATTER ACCUMULATION AND YIELD OF MAIZE (ZEA MAYS L.) IN SOUTHWEST CHINA - Q. Li; F. Kong; W. Long; Y. Wu; Q. Cheng; P. Dou; X. Ma; J. Yuan1; X. Guo (Journal of Animal and Plant Sciences, 2019)