冬小麦茎秆特性与抗倒性关系研究  

Study on the Relationship between Stem Characteristics and Lodging Resistance in Winter Wheat

作　　者：李战魁 李永飞 白小艳 徐灿 张敏 吴宏亮[1] 康建宏[1] 马文礼[1] Li Zhankui;Li Yongfei;Bai Xiaoyan;Xu Can;Zhang Min;Wu Hongliang;Kang Jianhong;Ma Wenli(School of Agriculture,Ningxia University,Yinchuan 750021,China;Ningxia Agricultural Reclamation Agricultural Forestry and Animal Husbandry Technology Extension Service Center,Yinchuan 750021,China)

机构地区：[1]宁夏大学农学院,宁夏银川750021 [2]宁夏农垦事业管理局农林牧技术推广服务中心,宁夏银川750021

出　　处：《农业科学研究》2024年第1期26-30,43,共6页Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(C130301)。

摘　　要：为明确滴灌冬小麦生长过程中影响小麦抗倒伏的主要因素,选用宁冬10、宁冬11、隆鉴115、隆鉴110、冬育5、冬育12和隆紫麦1共7个小麦品种,分析不同品种间抗倒伏性状的差异。结果表明:冬育5茎秆机械强度大(563.811 g),在供试品种中倒伏指数最小(0.638 g),与其他品种相比存在显著差异,且其基部节间短粗、茎秆壁较厚、株高及重心高度较低,抗倒伏性较好;倒伏指数与重心高度、基部节间长度、株高呈极显著正相关,与机械强度、基2节间鲜/干质量、基部节间直径、壁厚呈极显著负相关,且基2节壁厚与倒伏指数相关系数较大(r=-0.664)。可见,抗倒伏性强的冬小麦品种株高矮化、基部节间茎秆长度缩短、基部节间强度高。在供试小麦品种中,冬育5的抗倒伏性明显优于其他品种。In order to ascertain the primary factors affecting lodging resistance of drip-irrigated winter wheat during the growth process,seven wheat varieties,namely Ningdong 10,Ningdong 11,Longjian 115,Longjian 110,Dongyu 5,Dongyu 12 and Longzimai 1,were selected to analyze the differences in lodging resistance traits.The results showed that Dongyu 5 had the greatest stem mechanical strength(563.811 g)and the lowest lodging index(0.638 g)among the tested varieties,significantly differing from the others.It also had shorter and thicker basal internodes,thicker stem walls,lower plant height,and lower center of gravity,resulting in better lodging resistance.The lodging index showed a highly significant positive correlation with the center of gravity height,basal internode length,and plant height,and a highly significant negative correlation with mechanical strength,fresh and dry mass of the second internode from the base,diameter of the basal internodes,and wall thickness,with the wall thickness of the second internode showing a high correlation coefficient with the lodging index(r=-0.664).Thus,varieties with strong lodging resistance tend to have shorter plant height,shortened stem length at the basal internodes,and higher strength at the basal internodes.Among the tested wheat varieties,Dongyu 5 exhibited significantly better lodging resistance than the others.

关 键 词：滴灌水肥一体化 冬小麦 抗倒性 茎秆特性 倒伏指数 

分 类 号：S512.1[农业科学—作物学]