钾肥对糜子茎秆形态、力学、生理特性及抗倒伏能力的影响  

Effects of Potassium Fertilizer on Morphology,Mechanical Properties,Physiological Characteristics and Lodging Resistance of Broom Corn Millet

作　　者：梁海燕[1] 李海[1] 丁超[1] 杨芳[1] 宋晓强[1] 邓亚蕊 刘贵山 林凤仙[1] 张翔宇[1] 苏占明[1] 姜超[1] Liang Haiyan;Li Hai;Ding Chao;Yang Fang;Song Xiaoqiang;Deng Yarui;Liu Guishan;Lin Fengxian;Zhang Xiangyu;Su Zhanming;Jiang Chao(High Latitude Crops Institute,Shanxi Academy of Agricultural Sciences,Datong 037008,Shanxi,China;Agriculture and Rural Bureau of Wuzhai County,Xinzhou 036200,Shanxi,China)

机构地区：[1]山西省农业科学院高寒区作物研究所,山西大同037008 [2]忻州市五寨县农业农村局,山西忻州036200

出　　处：《作物杂志》2021年第6期177-181,共5页Crops

基　　金：财政部和农业农村部:国家现代农业产业技术体系(CARS-06-13.5-B6);山西农业大学生物育种工程项目:适合机械化收获黍子新品种选育(YZGC084);省留管办项目:晋北地区糜黍高效丰产技术集成与示范(2020-158)。

摘　　要：以糜子品种晋黍9号为试验材料,在拔节期追施不同量的钾肥,成熟前测定糜子植株农艺、力学及生理性状,收获后测产。结果表明,合理追施钾肥可增加植株的生物量、茎粗和根重,同时提高植株基部节间的充实度、抗折力和机械强度等力学指标,降低倒伏指数与倒伏系数,改变植株茎秆的生理特性,增加基2节的木质素和纤维素等化学组分含量,改善基部节间维管束特性,最终增强植株抗倒伏能力,提高糜子的产量。综合考虑糜子植株的抗倒伏能力和经济效益,追施钾(K_(2)O)90kg/hm^(2)效果较好。In order to study the effects of potassium (K) fertilizer on agronomic,mechanical and physiological properties of broom corn millet,an experiment of different amounts of potassium fertilizer was conducted using Jinshu No.9.The results showed that potassium fertilizer could increase plant biomass,stem diameter and root weight,increase plant basal internode fullness,flexural strength and mechanical strength,reduce lodging index and lodging coefficient,change plant stem physiological characteristics,increase the contents of lignin,cellulose and other chemical components in the second basal internode,improve the basal internode vascular bundle characteristics,and finally could enhance plant lodging resistance and increase the yield of mylonium.Considering the lodging resistance and economic benefit of millet plants,the effect of applying K (K_(2)O) 90kg/ha was better.

关 键 词：糜子 施钾量 茎秆形态 力学特性 生理特性 抗倒伏能力 

分 类 号：S516[农业科学—作物学]