A Study on Soil Nutrient with No tilllage in Dryland Corn Field
Ji Zengshun, Zhang Shumei, Xue Zongrang, Yan Xuanmei, Fan Lanying, Zhang Zhiqin
ACTA AGRICULTURAE BOREALI-SINICA . 1998, (3): 62 -67 .  DOI: 10.3321/j.issn:1000-7091.1998.03.012