Abstract:

In order to know the variation of the main climate factors in northeast China and better guide the arrangement of crop varieties, climate data of 97 climate stations for 46 years from 1961 to 2006 were analyzed. By using inverse distance interpolation method, the regional distribution of accumulated temperature, rainfall and radiation were analyzed, variation and trends among years of each climate factor in growing season (May to September) and the whole year were also analyzed. The results indicated that the distribution of accumulated temperature, rainfall and radiation in northeast China was consistent. Each climate factor was periodically changed between years. So, it was very important for high yield to take full advantage of regional and space-time rules of the main climate factors in northeast China and make reasonable distribution of crops.