Fractal Characteristics of Precipitation During Growing Periods of Main Crops and Its Ecological Significance in Heilongjiang Province
YU Xiao-qiu1,GE Jia-qi2,XU Zhong-ru2(1.College of Art & Science,Heilongjiang August First Land Reclamation University,Daqing 163319,China;2.College of Science,Northeast A gricultural University)
Chinese Journal of Agrometeorology . 2007, (02): 132 -135 .