Distribution Characteristics of Soil Alkali-hydrolyzale Nitrogen in Herbal and Food-crop Fields in Anguo City, Hebei Province
ZHAO Jiao-jiao, LIU Wen-ke
ACTA AGRICULTURAE BOREALI-SINICA . 2014, (S1): 288 -291 .  DOI: 10.7668/hbnxb.2014.S1.054