化学调控对春玉米茎秆形态特征和力学性状的影响  

Effects of Chemical Regulator on Morphological and Mechanical Properties of Spring Maize Stalk

作　　者：孙宁[1] 孟祥盟[1] 边少锋[1] 赵洪祥[1] 于玮淇 张丽华[1] 谭国波[1] 闫伟平[1] SUN Ning;MENG Xiangmeng;BIAN Shaofeng;ZHAO Hongxiang;YU Weiqi;ZHANG Lihua;TAN Guobo;YAN Weiping(Agricultural Resources and Environment Institute,Jilin Academy of Agriculture Sciences,Changchun Jilin 130033;College of Agronomy,Yanbian University,Yanji Jilin 133200)

机构地区：[1]吉林省农业科学院农业资源与环境研究所,吉林长春130033 [2]延边大学农学院,吉林延吉133200

出　　处：《现代农业科技》2020年第23期7-9,共3页Modern Agricultural Science and Technology

基　　金：国家重点研发计划项目(2017YFD0300601-2);国家玉米产业技术体系(CARS-02-42)。

摘　　要：本文以先玉335为试验材料,研究了化学调控对玉米茎秆形态特征和力学性状的影响。结果表明,化学调控显著降低了玉米植株的穗位高度,抑制了基部节间的伸长,增加了基部第3~5节的节间周长,显著提高了第3~5节茎秆的穿刺强度和压折强度,从而重塑理想株型,显著降低了植株倒伏率,优化了产量构成因素,实现了玉米产量的提升。Taking Xianyu335 as experimental material,the effects of chemical regulator on morphological and mechanical properties of maize stalk were studied.The results showed that chemical regulation significantly reduced the ear height of plant,suppressed the basal internode elongation,increased internode circumference of the base section(from the third to the fifth),significantly improved the puncture strength and crushing strength of the base section(from the third to the fifth),reshaped ideal plant type,significantly reduced the lodging rate,optimized the yield components,realized the increase of maize yield.

关 键 词：春玉米 化学调控 茎秆 形态特征 力学性状 

分 类 号：S513[农业科学—作物学]