Effects of Long-term Nutrient Deficiency on Photosynthetic Characteristics of Summer Maize
LI Fu-jie, WU Lan-fang, MA Jun-hua, KANG Hua-jing
ACTA AGRICULTURAE BOREALI-SINICA . 2013, (5): 213 -218 .  DOI: 10.7668/hbnxb.2013.05.036