关键词: 直链淀粉, 直链淀粉, 直链淀粉含量（AC）, 水稻

Abstract: Abstract：Utilize accumulated temperature, temperature on average and historical materials of the minimum temperature extremely in January in January of winter of 39 years (December - February) of Puyang for 1971-2009 year, Use statistics principle and method go on climate influence statistical analysis, Obtain the type of influencing the wheat freeze injury of Puyang and belong to the violent lowering the temperature type that winter has set in, it is the most serious weather type of freeze injury that winter has set in of the wheat. Propose wheat freeze injury defend countermeasure, including strengthening management raise, sow quality & nbsp; , the remedy after strengthening and managing and freezing in the wheat field before winter. Because the freeze injury of surviving the winter takes place in period early, there is larger circling round in the space in the management on later stage, if control measures are apt, the wheat can still relatively obtain high yield.