Effects of Three Winter Green Manure of North China on the Growth and Nutritional Quality of Lettuce
ZHAO Qiu, ZHANG Xin-jian, NING Xiao-guang, GAO Xian-biao, CAO Wei-dong, SUN Xiang-yang
ACTA AGRICULTURAE BOREALI-SINICA . 2015, (6): 159 -163 .  DOI: 10.7668/hbnxb.2015.06.024