通辽地区玉米生产的热量条件分析  

Analysis on Heat Conditions of Maize Production in Tongliao

作　　者：郭颖[1] 夏莹[1] 李春云[1] 高艳玲[1] 姜秀萍 

机构地区：[1]通辽市气象局,内蒙古通辽028000 [2]开鲁县气象局,内蒙古开鲁028400

出　　处：《内蒙古气象》2011年第3期28-30,33,共4页Meteorology Journal of Inner Mongolia

摘　　要：玉米是通辽市最主要的粮食作物,其丰歉决定农业年景的好坏。为了探讨在气候变暖的大背景下通辽市玉米生产的热量状况,为政府和生产部门的决策及气象业务、服务工作提供依据,笔者利用科尔沁、开鲁、鲁北、保康、甘旗卡、库伦、大沁他拉等7个国家基本气象站1959-2010年资料,对影响玉米生产的≥10.0℃积温和玉米生育期天数进行了分析研究,结果表明:(1)≥10.0℃积温、持续期和玉米生育期天数能满足玉米晚熟品种的生育需要,而且线性趋势递增明显,滑动t检验在80年代末或90年代初发生了突变,以上均在0.01或0.05的水平以上,存在一定的周期。(2)由于一些年份一些台站近几年出现初霜冻异常偏早,使生育期波动大,并有下降迹象,因此选择玉米品种不可盲目贪晚。Maize was the most important food crops in Tongliao,and its yield determined the year＇s harvest of agriculture.In order to discuss the heat conditions of maize production in the background of climate warming,and provide the basis for the decision-making of government and production department and meteorological operation and services,using the data of seven national basic weather stations including Khorchin,Kailu,Lubei,Baokang,Ganqika,Urga and Daqintala from 1959 to 2010 years,the ≥ 10℃ accumulated temperature and maize childbearing period days which affects maize production was analyzed.The results showed that ≥ 10℃ accumulated temperature,the sustained period and the maize growing period days able to meet growth needs of late variety maize,the linear trend increased clearly,sliding t test changed suddenly in the late 80s or early 90s,They were more than 0.01 or 0.05 level and there was a certain period.Since a number of stations emerged the first frost anomaly early in recent years,the growth period fluctuated largely with the trendy of decline,so the selection of maize breed should not be late blindly.

关 键 词：玉米 积温 生育期 变化 分析 

分 类 号：S161.1[农业科学—农业气象学]