Welcome to Chinese Agricultural Science Bulletin,
CASB
Effect of Per-winter Positive Accumulated Temperature on Suitable Planting Dates of Winter Wheat in South Centre Area of Hebei
Cui Yansheng, Han Jiangwei, Cao Gang ,Meng Jian, Zhang Jinwen
Chinese Agricultural Science Bulletin . 2008, (7): 195 -198 .  DOI: 10.11924/j.issn.1000-6850.20086024