Abstract:Global warming and drying are the most prominent changes among all climate changes. It is reported that the range of rising temperature in northern China is above the average in the whole country and the climate warming in these areas are dramatic. The contribution of minimum temperature to region warming is greater than that of maximum temperature. The precipitation in the northeast, north and east part of northwest of China decreased significantly at a rate of 20 to 40 mm per ten years, especially in spring and summer. The drying and warming are prominent trends that lasted to the later 1990s. Global climate warming puts a constant pressure on crop growth and production. In northern China, climate warming is compounded with climate drying, resulting in a condition that dramatically affects crop growth. To delineate the impact and the response of crops to such changes, we analyzed the growth/development, planting region and area, cereal production and quality of seven major cereal crops that include both thermo-philic (rice, maize, millet and prosomillet) and cool-philic (winter wheat, spring wheat and potato) crops. The results showed that climate warming and drying caused early sowing of spring crops, accelerated seedling growth and development, early arrival of the vegetative growth phase, extended reproductive growth phase, and hence extended whole growth periods. To fall crops, climate warming and drying caused delayed growth and development, extended reproductive growth phase, and extended whole growth periods. To winter crops, it caused delayed sowing, reduced winter mortality, early greening, and shortened entire growth periods. As a consequence, this change led to an expansion of crop suitable growth regions towards north and high altitude, a gradual adaptation of high yield crops with mid- to late maturation, a quick increase in planting areas for thermo-philic crops and winter crops in low temperature areas, a restrained planting areas for drought sensitive crops such as maize and spring wheat in dry areas. It also indicated that climatic yields of crops were seriously affected by warming and drying in rain-dependent areas. The climatic yields of drought sensitive crops such as wheat and maize were influenced seriously by warming and drying, but the climatic yields of drought-tolerant crops such as millet, prosomillet and potato were influenced slightly. The trend of warming and drying appeared to be advantageous to climatic yield of rice, maize and winter and disadvantageous to spring wheat and potato. We provided the technical measures in dealing with the climate drying and warming in adjusting structure of planting to ensure grain production safety, adjusting the percentage of different type of annual climate accordingly, breeding for more suitable crop varieties and measuring optimum crop planting pattern, adopting different planting techniques and management model and different climatic condition,s and taking integrated technology to improve the ability to fend off disasters. Countermeasures in dealing with climate warming and drying were also provided and discussed in this context.