摘要
为探究外源钾肥对烤烟抵御低温逆境的效果,采用室内试验和大田试验相结合的方式研究喷施0.1%磷酸二氢钾(T1)和0.1%黄腐酸钾(T2)对烟草生长发育、碳氮含量及抗氧化酶系统的影响。结果表明,与叶片喷施清水对照(CK)相比,T1和T2的地上部干重分别显著增加65.8%和27.2%,烟草根系干重分别显著增加133.3%和72.2%,全碳含量分别显著增加17.4%和20.2%;T1的可溶性糖含量和可溶性蛋白质含量分别显著增加26.4%和41.5%;T1和T2的过氧化氢酶活性分别显著增加76.2%和38.3%,总抗氧化能力分别显著增加250.2%和40.8%。隶属函数法综合评价结果表明,T1的综合低温抗性最优。建议在移栽期和倒春寒频发期叶面喷施0.1%磷酸二氢钾提高烟草低温抗性。
In order to explore the effect of exogenous potassium fertilizer on the resistance of flue-cured tobacco to chilling stress,the effects of spraying 0.1%potassium dihydrogen phosphate(T1)and 0.1%potassium fulvic acid(T2)on the growth and development,carbon and nitrogen content and antioxidant enzyme system of tobacco were studied by indoor and field experiments.The results showed that compared to the control(CK,foliar spray with distilled water),the shoot dry weight of T1 and T2 increased significantly by 65.8%and 27.2%,respectively.The root dry weight of T1 and T2 increased significantly by 133.3%and 72.2%compared to the control,respectively.The total carbon content of T1 and T2 increased significantly by 17.4%and 20.2%compared to the control,respectively.The soluble sugar content and soluble protein content of T1 increased significantly by 26.4%and 41.5%compared to the control,respectively.Compared to the control,the catalase activity of T1 and T2 increased significantly by 76.2%and 38.3%,respectively,and the total antioxidant capacity increased significantly by 250.2%and 40.8%,respectively.The comprehensive evaluation results of the membership function method showed that the comprehensive low temperature resistance of T1 was the best.It was recommended to spray 0.1%potassium dihydrogen phosphate during the tobacco transplanting period and the period of late spring frosts to improve cold resistance of tobacco to low response.
作者
陈涛
李国兰
付慧杰
朱松发
宋文静
张亚丽
于可可
CHEN Tao;LI Guo-lan;FU Hui-jie;ZHU Song-fa;SONG Wen-jing;ZHANG Ya-li;YU Ke-ke(Sanming Branch,Fujian Provincial Tobacco Company,Sanming 365000,Fujian,China;China Tobacco Jiangsu Industrial Co.,Ltd.,Nanjing 210019,China;Institute of Tobacco Research,Chinese Academy of Agricultural Sciences,Qingdao 266101,Shandong,China;College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China)
出处
《湖北农业科学》
2025年第7期36-39,共4页
Hubei Agricultural Sciences
基金
中国烟草总公司福建省公司科技项目(2022350000240053)。
关键词
烟草
幼苗
外源钾肥
碳氮积累
低温胁迫
低温抗性
生理响应
tobacco
seedlings
exogenous potassium
carbon and nitrogen accumulation
chilling stress
chilling tolerance
physiological response
