河套灌区向日葵终霜冻指标及其时空分布特征
杨松1,杨卫1,刘俊林1,淡建兵2,梁凤娟1,李连连2
The Mccurrence Regulation and its temporal and spatial distribution of Sunflower last frost disaster in Hetao Irrigated Area
中国农学通报 . 2010, (1): 256 -259 .  DOI: 10.11924/j.issn.1000-6850.2009-1500