灌溉畦长对小麦冠层光能利用特性的影响  

Effects of Field Border Length for Irrigation on Canopy Light Utilization Characteristics of Wheat

作　　者：延飞龙 赵俊晔[2] 石玉[1] 于振文[1] YAN Feilong;ZHAO Junye;SHI Yu;YU Zhenwen(Ministry of Agriculture Key Laboratory of Crop Ecophysiology and Farming System,Shandong Agricultural University,Tai'an,Shandong 271018,China;Agricultural Information Institute Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]山东农业大学农业部作物生理生态与耕作重点实验室,山东泰安271018 [2]中国农业科学院农业信息研究所,北京100081

出　　处：《麦类作物学报》2019年第10期1241-1245,共5页Journal of Triticeae Crops

基　　金：农业部现代小麦产业技术体系项目(CARS-3-1-19);国家自然科学基金项目(31771715,31601243)

摘　　要：为明确灌溉畦长对小麦冠层光能利用特性的影响,以济麦22为供试材料,在改水成数90%灌溉条件下,设置10 m(L10)、20m(L20)、30m(L30)、40 m(L40)4个畦长处理,比较分析了不同畦长灌溉处理间小麦开花期土壤含水量、花后叶面积指数、冠层光能利用特性和籽粒产量的差异。结果表明,随畦长的增加,麦田灌溉量、土壤含水量、花后0~28 d叶面积指数、花后14d冠层光合有效辐射截获率和截获量、冠层光能转化率和利用率、产量和水分利用效率均呈增加趋势,花后14d冠层光合有效辐射透射率呈下降趋势,L40处理的以上指标与其他处理差异均显著。畦长对小麦耗水量影响不明显。因此,增加灌溉畦长可促进土壤水分贮存、小麦冠层光能吸收、转化和利用,增加产量和水分利用效率;在本试验条件下,40m畦长灌溉表现最佳。In order to explore the effects of field border length for irrigation on canopy light utilization characteristics of winter wheat,using Jimai 22 as experiment material,four field border length treatments were set up at 10 m(L10),20 m(L20),30 m(L30)and 40 m(L40)with 90%inflow cutoff.The soil water content at anthesis,leaf area index after anthesis,canopy light utilization characteristics and yield of wheat under different treatments were analyzed.The results showed that,with the increase of field border length,the irrigation amount,soil water content,canopy PAR conversion efficiency and PAR utility efficiency,wheat yield and water use efficiency were increased.The leaf area index of wheat during 0 to 28 days after anthesis and the canopy PAR capture ratio,intercepted ratio at 14 days after anthesis were also increased.However,the PAR penetration ratio was decreased with the increase of field border length.The above indices under L40 treatment were significantly different from those under other treatments.The effect of field border length on wheat water consumption amount was not obvious.Therefore,increasing irrigation field border length can promote soil water storage,PAR absorption,conversion and utilization of wheat canopy,yield and water use efficiency.Under this test conditions,the irrigation of 40 m furrow was the best.

关 键 词：畦长 小麦冠层 光能利用率 籽粒产量 水分利用效率 

分 类 号：S512.1[农业科学—作物学] S311