乙矮合剂对酿造高粱抗倒伏能力及产量的影响  

Effects of Ethylene-Chlormequat-Potassium(ECK)onSorghum[Sorghum bicolor(L.)Moench.]Lodging Resistance andYield

作　　者：任梁 房孟颖 武志海[2] 董学瑞 卢霖[1] 闫鹏 董志强[1] Ren Liang;Fang Mengying;Wu Zhihai;Dong Xuerui;Lu Lin;Yan Peng;Dong Zhiqiang(Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology,Ministry of Agriculture and Rural Affairs,Beijing 100081,China;Foculty of Agronomy Jilin Agricultural University,Changchun 130118,Jilin,China)

机构地区：[1]中国农业科学院作物科学研究所/农业农村部作物生理生态与栽培重点开放实验室,北京100081 [2]吉林农业大学农学院,吉林长春130118

出　　处：《作物杂志》2024年第4期164-171,共8页Crops

基　　金：国家重点研发计划―杂粮抗逆绿色增效关键栽培技术研发(2020YFD10008001)

摘　　要：为研究乙矮合剂(ECK)对高粱抗倒伏能力及产量的调控效应,于2020年在中国农业科学院作物科学研究所新乡试验基地设置田间试验,以辽杂19(LZ19)和辽杂37(LZ37)为试验材料,采用裂区试验设计,ECK喷施时期(拔节期、孕穗期)为主区,喷施剂量和品种为副区,设置0.75、1.50和2.25 L/hm^(2)3个喷施剂量(分别表示为ECK0.75、ECK1.50和ECK2.25),对照(CK)喷施等量清水。结果表明,ECK处理显著降低了高粱的株高,提高了高粱生育期内叶面积指数,促进了地上部干物质积累。ECK处理下,2个高粱品种第7~12节节长较CK降幅分别为21.9%~36.5%和4.5%~15.4%;拔节期ECK处理显著提高了第7~11节节粗和压折强度,ECK1.50和ECK2.25处理下第7~11节节粗相比CK增幅分别为4.9%~7.4%和4.4%~9.5%,压折强度增幅分别为9.2%~23.0%和4.6%~29.9%。随着喷施剂量增加,高粱产量呈先增加后下降趋势,拔节期ECK0.75处理增产效果最优,辽杂19和辽杂37相比CK分别增产3.4%和11.4%。因此,在本试验条件下,高粱拔节期叶面喷施0.75 L/hm^(2)的ECK能够改善高粱农艺性状,增强高粱的抗倒伏能力,提高产量。In order to study the effect of thylene-chlormequat-potassium(ECK)on sorghumlodging resistanceand grain yield,field trials were conducted at the Xinxiang site of the Institute of Crop Sciences,ChineseAcademy of Agricultural Sciences in 2020 using the Liaoza 19(LZ19)and Liaoza 37(LZ37).Split zoneexperiment design was adopted,ECK spraying periods(jointing stage,booting stage)were the main zone,andspraying dose and variety were the secondary zones.Three spraying doses of 0.75,1.50 and 2.25 L/ha(denotedas ECK0.75,ECK1.50 and ECK2.25,respectively)were set,while the control(CK)was sprayed with thesameamount of water.The results showed that the ECK treatment significantly reduced the plant height of thetwosorghum varieties,increased the leaf area index,and promoted above-ground dry matter accumulation duringthesorghum reproductive period.Under ECK treatment,the length of 7th-12th nodes of two sorghumvarietiesdecreased by 21.9%-36.5%and 4.5%-15.4%cmpared with CK,respectively.The ECK treatment at the jointingstage was significantly increased the width and breaking strength of the 7th-11th nodes,ECK1.50 and ECK2.25increased the width of 7th-11th nodes by 4.9%-7.4%and 4.4%-9.5%,respectively,and breaking strengthof the7th-11th nodes by 9.2%-23.0%and 4.6%-29.9%,respectively,compared to CK.With the increase of sprayingdose,sorghum yield increased first and then decreased.ECK0.75 treatment at jointing stage had the best yieldenhancement,the yields of Liaoza 19 and Liaoza 37 increased by 3.4%and 11.4%,respectively,comparedwithCK.In conclusion,leaf spraying 0.75 L/ha of ECK at the jointing stage could improve sorghumagronomictraitsand yield,and enhance the lodging resistance as well.

关 键 词：乙矮合剂 高粱 喷施时期 喷施剂量 抗倒伏能力 产量 

分 类 号：S514[农业科学—作物学]