Effect of Different Levels N Application on the Ntrate Accumulation in Cucumber and Soil in Sunlight Greenhouse
GUO Pei-qiu, LI Xu-hua, WANG Ke-an, YANG Ning
ACTA AGRICULTURAE BOREALI-SINICA . 2009, (1): 185 -188 .  DOI: 10.7668/hbnxb.2009.01.041