CAJ | 학술논문

为定量评估气候变暖对冬小麦灌浆期的影响，进行了冬小麦田间增温处理和生长观测试验。结合历史资料，分析了增温对冬小麦灌浆过程的影响，确定了华北地区冬小麦灌浆期高温热害指标。结果表明，30℃以上的高温对冬小麦灌浆有明显的抑制作用，单日高温时长和高温强度共同影响灌浆速率，其中高温（t≥30℃）时长是关键因子。根据高温时长定义了华北地区冬小麦灌浆期高温热害指标：高温日（高温时数高于5 h ）数达到10 d且高温过程（连续3个高温日）数为1次定义为轻度热害；高温日数达到11 d且高温过程数为2次定义为中度热害；高温日数大于11 d且高温过程数大于2次定义为重度热害。
위정량평고기후변난대동소맥관장기적영향，진행료동소맥전간증온처리화생장관측시험。결합역사자료，분석료증온대동소맥관장과정적영향，학정료화북지구동소맥관장기고온열해지표。결과표명，30℃이상적고온대동소맥관장유명현적억제작용，단일고온시장화고온강도공동영향관장속솔，기중고온（t≥30℃）시장시관건인자。근거고온시장정의료화북지구동소맥관장기고온열해지표：고온일（고온시수고우5 h ）수체도10 d차고온과정（련속3개고온일）수위1차정의위경도열해；고온일수체도11 d차고온과정수위2차정의위중도열해；고온일수대우11 d차고온과정수대우2차정의위중도열해。
In order to evaluate quantitatively the effects of climate warming on grain filling of win-ter wheat ,the field heating treatments and growth observation experiment on winter wheat were carried out .In light of the historic data ,the statistical method was used to analyze the effects of warming on filling process of winter wheat ,and to determine the heat damage index of winter wheat during grain-filling period in North China .The result indicated that the high temperature a-bove 30 ℃ had significant inhibiting effect on grain filling of winter wheat .The length and inten-sity of high temperature (t≥30 ℃)per day jointly influenced the grain-filling rate ,especially for the length of high temperature .The heat damage index during grain filling period of winter wheat was defined based on the length of high temperature in North China .When the days of high tem-perature(≥30 ℃ over 5 h per day)reached to 10 days and the high temperature process (high tem-perature lasting for 3 days)got once ,it was defined as the mild heat damage .When the days of high temperature(≥30 ℃ over 5 h per day)reached to 11 days and the high temperature process (high temperature lasting for 3 days)occurred twice ,it was defined as the moderate heat damage . When the days of high temperature (≥30 ℃ over 5 h per day )exceeded 11 days and the high tem-perature process(high temperature lasting for 3 days)appeared more than twice ,it was defined as the severe heat damage .