【作者】 王宁珍； 邓振镛； 黄斌； 张谋草； 毛玉琴； 靳正平； 薛万孝；

【Author】 Wang Ningzhen1,2 , Deng Zhenyong1, Haung Bin2 , Zhang Moucao2, Mao Yuqin3 , Jin Zhengping4 , Xue Wanxiao5 (1. Lanzhou Institute of Arid Meteorology, CMA; Key (Open) Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province (CMA), Lanzhou 730020 China; 2. Xifeng agro-meteorological experiment station, Xifeng 745000 Gansu; 3.Shandan County Meteorological Bureau,734100 ; 4. Jiuquan Meteorological Bureau,735000; 5. Gansu Meteorological bureau information and equipment center, Lanzhou 730020 )

【机构】 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室； 甘肃省西峰农业气象试验站； 甘肃省山丹县气象局； 甘肃省酒泉市气象局； 甘肃省气象局信息与装备中心；

【摘要】 通过对玉米单株干物重变化研究得出:玉米单株干物重营养生长以前呈指数变化,进入生殖生长期后呈直线变化,年内变化表现为缓慢增长至快速增长趋势。增长率呈"s"型曲线变化,抽雄普遍期增长速率最快。年际变化在不同气候年型,变化趋势基本一致,气候变化在营养生长期对干物重影响较小,生殖生长期影响较大,各个发育期的干物重年际间存在着较大差异;干物重积累的多少主要与七叶至抽雄期降水和抽雄至乳熟期≥10℃积温密切相关。提要:通过对玉米单株干物重变化研究得出:玉米单株干物重营养生长以前呈指数变化,进入生殖生长期后呈直线变化,年内变化表现为缓慢增长至快速增长趋势。增长率呈"s"型曲线变化,抽雄普遍期增长速率最快。年际变化在不同气候年型,变化趋势基本一致,气候变化在营养生长期对干物重影响较小,生殖生长期影响较大,各个发育期的干物重年际间存在着较大差异;干物重积累的多少主要与七叶至抽雄期降水和抽雄至乳熟期≥10℃积温密切相关。更多还原

【Abstract】 It analyzed the corn single stem dry matter weight change. The result shown that the single dry matter weight of corn assumes index change before it is nutrition growth, and it assumes the straight line change while after entering the reproduction growth period, the change was from slow to fast growth tendency in the year. The rate of increment assumes the "s" curve change, heading universal period growth was quickest. The changing tendency was basic consistent in different climate year type, climate change influence to the dry matter weight was small in the nutrition vegetal period while it was big in the reproduction vegetal period, the dry matter weight of growths period had the big difference yearly. The dry matter weight accumulated much or less mainly close correlation whit the precipitation from seven leaves to heading stage and the ≥10℃ accumulated temperature from heading to mile mature stage.更多还原