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2017年鲁西北夏玉米雌穗分化异常的气象成因分析 预览

Analysis of Meteorological Causes to Influence Differentiation Abnormity of Female Ears in Summer Corn in Northwestern Shandong in 2817
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摘要 为鲁西北夏玉米高产稳产提供保障服务,利用德州市11个气象观测站2017年6月底至8月中下旬的逐日最高气温、最低气温、相对湿度、日照和降水等气象资料,采用统计方法,对造成夏玉米穗、果畸形和空秆的气象因素进行分析。结果表明:2017年,鲁西北夏玉米苗期遭遇高温干旱,植株生长较弱;拔节孕穗期阴雨寡照,影响了光合物质的转化积累,果穗无法正常发育;开花授粉期高温高湿,花粉失去活性,受精率降低,从而导致2017年德州地区夏玉米果穗畸形和空秆。生产上可采取品种合理搭配、适当调整播期、合理密植及人工授粉等栽培措施降低气象风险。 The meteorological factors causing abnormity and barren stem of summer corn were studied by statistically analyzing the meteorological data of daily maximum temperature, minimum temperature, relative humidity, sunlight and precipitation from 11 meteorological observation stations in Dezhou City from the late June to the mid to late August 2017 to provide safeguard service for high and stable yield of summer corn in Northwestern Shandong. Result.. The meteorological factors causing abnormity and barren stem of summer corn are high temperature and drought at corn seedling stage, rainy and sunless at jointing and booting stage and high temperature and humidity at flowering and pollination stage, which results in poor growth vigor of corn plants, abnormal development of ears and lower fertility rate in Dezhou City in 2017. The cultivation measures to reduce the meteorological risk in summer corn production include selection of rational variety combination, appropriate adjustment of sowing date, rational close planting and artificial pollination.
作者 朱保美 周清 吴泽新 张平 司华 杨以健 ZHU Baomei1 , ZHOU Qing2 , WU Zexin1 , ZHANG Ping3 , SI Hua2 , YANG Yijian2 (1. Dezhou Meteorological Bureau, Dezhou, Shandong 253078; 2. Qihe Meteorological Bureau, Qihe, Shandong 251100 ; 3. Qihe Station for Popularizing Agricultural Technique, Dezhou, Shandong 251100, China)
出处 《贵州农业科学》 CAS 2018年第9期50-54,共5页 Guizhou Agricultural Sciences
基金 山东省气象局重点课题“德州粮食(小麦)安全智慧气象服务技术研究”(2016sdqxz07)
关键词 夏玉米 雌穗分化异常 气象成因 技术措施 鲁西北 summer corn female ear differentiation abnormity meteorological cause technical measure Northwestern Shandong
作者简介 朱保美(1979-),女,副高级工程师,从事农业气象和气候方面的相关研究。E-mail:13969289244@163.com
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