农牧交错区不同玉米种植年限对土壤氮磷养分的影响研究
张艾明, 刘苏蓝, 余洪茜, 朱建宇, 徐玉梅
Effects of different planting years of maize on soil nitrogen and phosphorus in agro-pastoral ecotone
ZHANG Ai-ming, LIU Su-lan, YU Hong-xi, ZHU Jian-yu, XU Yu-mei
湖北农业科学 . 2022, (14): 74 -77 .  DOI: 10.14088/j.cnki.issn0439-8114.2022.14.012