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The northeast region of 10km * 10km meteorological elements interpolation data as well as crops and development of information-based, heat index and the heat index threshold by calculating each grid point, get cold damage index value on each grid point. Chilling injury index on the basis of empirical orthogonal decomposition and wavelet analysis, and its temporal variation and multi-time-scale features. Based on the principle of risk analysis, to establish the applicable on corn in Northeast cold damage risk assessment of the indicator system, heat index variation coefficient different intensity cold harm the years, there is the probability of cut rate risk index and disaster-resistant properties of four risk assessment indicators respectively conducted analysis build a comprehensive risk zoning index value of each grid point of the northeastern region of maize chilling injury risk. The preliminary conclusions are as follows: the northeast region of maize chilling spatial distribution are mainly three types: the region consistent, the absolute value of the largest center in Yanbian, Jilin and Heilongjiang, Mudanjiang City, northeast region is the most sensitive to chilling injury area; southwest and northeast opposite its maximum absolute value of the center is located in a large, the region of Xiaoxing'anling cold damage for the northeast region, another sensitive area; northwest and southeast of the opposite type, its absolute value of the largest centers are located in the northwestern Heilongjiang, eastern Jilin Changbai Mountain area, two regional cold and warm inversely the trends are northeast corn chilling injury in sensitive areas. Corn chilling injury time coefficients of the three spatial distribution analysis: corn in Northeast cold damage there are laws, and first modal in 1971-1992, and presents a quasi-eight-year cycle variation, the second mode did not show good periodic law, third mode in 1963-1974, showing a quasi-periodic variation of two years. Heat index coefficient of variation of low value area is mainly distributed in the plains, in the value of the area and the high value of the area is mainly distributed in the Greater Xing'an Mountains, Mountains, Changbai Mountain area, and Baicheng City, Jilin sand, mountains and sandy coefficient of variation is higher than the plain areas. The general cold damage risk index probability distribution showed the following characteristics, low value area is mainly distributed to the plain areas. In the value of the area is located in Changchun City, Siping City, and Liaohe Plain. High value area is mainly distributed in central and southwest of Heilongjiang Province, the eastern part of Jilin Province, including the Greater Xing'an Mountains, Mountains, Changbai Mountain area. The probability of serious chilling injury risk index high value area is mainly distributed in the mountains. Probability of high-value area is located generally cut years Daxing'anling, the Xiaoxing'anling and the Sanjiang Plain, the eastern mountain area of ??Jilin Province, Liaoning Liaodong Peninsula, Chaoyang City. Years appeared severely reduced probability of high value areas are mainly located in the Changbai Mountain area. The the northeast corn chilling injury risk zoning low value area is located in the Sanjiang Plain Jiamusi, Hegang the two cities, in most parts of the Songnen Plain, and the Liaodong Peninsula; median area is mainly distributed in Liaoning Province, Liaohe River Plain, Chaoyang City, Jilin Province, Baicheng western Jilin City, Tonghua City, Liaoyuan City, Heihe City, Heilongjiang Province, Yichun City, Mudanjiang City and Shuangyashan parts; high value area is located, in Yanbian, Jilin Province, Hakusan City, Tonghua City, Heilongjiang Province Daxinganling region.
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