国审玉米品种浚单20和浚单29的光温需求特征  

Solar Radiation and Accumulated Temperature Requirements of State Approved Maize Varieties,Xundan 20 and 29

作　　者：王秀萍[1,2] 齐红志[3] 胡景辉[4] 

机构地区：[1]中国气象局河南省农业气象保障与应用技术重点实验室,河南郑州450003 [2]河南省气象科学研究所,河南郑州450003 [3]河南省农业科学院农业经济与信息研究所,河南郑州450002 [4]河北省农林科学院农业信息与经济研究所,河北石家庄050051

出　　处：《河南农业科学》2015年第10期39-42,共4页Journal of Henan Agricultural Sciences

基　　金：公益性行业(气象)科研专项(GYHY201406026);国家自然科学基金项目(U1304405)

摘　　要：基于国审夏玉米品种浚单20和浚单29的区域试验数据和对应的气象数据，分析了2个品种对光温资源的需求及响应规律。结果表明：浚单29的生育期平均较浚单20长4d，但2个品种完成生育期所需积温无显著差异，其中浚单29生育期延长主要表现在吐丝后生育天数的延长。浚单20和浚单29全生育期所需积温分别为2384～2852℃和2366～2927℃。浚单29出苗一吐丝所需≥10℃积温显著低于浚单20，吐丝一成熟所需≥10℃积温显著高于浚单20。除播种一出苗外，出苗一吐丝、吐丝一成熟和播种一成熟3个阶段均表现为浚单29的日照时数较浚单20显著偏低。2个品种吐丝一成熟天数和全生育期天数对产量有显著的正效应。Solar radiation （SR） and accumulated temperature （AT） requirements of state approved maize varieties Xundan 20 （XD20） and Xundan 29 （XD29） were analyzed based on the Huang-Huai-Hai （HHH） region summer maize trial data and related meteorological data. The result showed that the growth period of XD29 was four days longer than XD20 with similar AT requirements. The longer growth period of XD29 was mainly due to elongation of the post-silking growth period. Total AT requirements of XD20 and XD29 were 2 384--2 852 ~C and 2 366--2 927 ~C ,respectively. The AT requirement（ I〉 10 ~C ） of XD29 from emergency to silking was significantly lower than XD20, while the AT requirement from silking to maturity was significantly higher than XD20. The required sunshine hours of XD29 from emergency to sil- king,silking to maturity and seeding to maturity were significantly lower than XD20. Days from silking to maturity and days of total growth period had significantly positive effects on yield for the two varieties.

关 键 词：玉米 积温 日照时数 产量 

分 类 号：S513[农业科学—作物学]