The Study on the Abundance and Deficiency Indices of Phosphorus and Potassium of Wheat with Straw Returning in Taihang Mountain Piedmont Plain
ZHOU Xiao-fen, FENG Wei, YANG Jun-fang, SUN Li-min, DU Jin-zhong, WANG Su-ying, ZHAO Zhi-lan
ACTA AGRICULTURAE BOREALI-SINICA . 2011, (2): 170 -174 .  DOI: 10.7668/hbnxb.2011.02.036