摘要
为实现生物炭施用下烤烟轻简化追肥,利用土柱淋溶试验结合大田试验,研究了生物炭施用量与追肥次数对烟草生长发育和氮素积累的影响。结果表明,生物炭用量达到10 t/hm^(2)时可以显著提高土壤含水率,显著降低氮总淋溶量。烤烟农艺性状主要受到生物炭用量的影响,烤烟干物质(特别是叶片干物质)及氮素积累主要受追肥次数的影响,生物炭用量、追肥次数及两者互作均对烤烟经济性状有显著影响,但主要受追肥次数的影响。总体来看,10 t/hm^(2)生物炭施用条件下,追肥2次提供了更适宜的养分供给模式,提高了烟草的氮肥利用率和经济效益,可以为发展烟草栽培轻简化追肥模式提供参考。
In order to realize the light and simplified topdressing of flue-cured tobacco under biochar application,the effects of biochar application rate and topdressing frequency on tobacco growth and nitrogen accumulation were studied by using the soil column leaching test combined with field experiments.The results showed that the dosage of biochar up to 10 t/ha could significantly increase the soil water content and significantly reduce the total leaching of N.The agronomic characteristics of tobacco were mainly affected by the dosage of biochar.The agronomic traits of flue-cured tobacco were mainly affected by the dosage of biochar,and the dry matter(especially leaf dry matter)and nitrogen accumulation of flue-cured tobacco were mainly affected by the number of times of fertilizer application.The dosage of biochar,the frequency of fertilizer application and the interaction between the two had significant effects on the economic traits of flue-cured tobacco,but they were mainly affected by the frequency of fertilizer application.Overall,under the condition of 10 t/ha biochar application,two times of topdressing provided a more suitable nutrient supply pattern,improved the nitrogen fertilizer utilization and economic benefits of tobacco,which can provide a reference for the development of light and simplified fertilizer chasing pattern in tobacco cultivation.
作者
杨佳宜
何罗驭阳
唐昕
周成轩
周南
向世鹏
周智
YANG Jiayi;HE Luoyuyang;TANG Xin;ZHOU Chengxuan;ZHOU Nan;XIANG Shipeng;ZHOU Zhi(College of Agriculture,Hunan Agricultural University,Changsha 410128,China;College of Chemistry and Materials Science,Hunan Agricultural University,Changsha 410128,China;Changsha Branch of Hunan Provincial Tobacco Company,Changsha 410019,China)
出处
《中国烟草科学》
CSCD
北大核心
2023年第5期9-17,共9页
Chinese Tobacco Science
基金
湖南省烟草公司长沙市公司技术开发项目(CS2022KJ01)
湖南省烟草公司衡阳市公司技术开发项目(HYYC2023KJ31)。
关键词
生物炭
氮素淋溶
追肥
烤烟
氮肥利用率
biochar
nitrogen leaching
topdressing
flue-cured tobacco
nitrogen fertilizer efficiency
作者简介
杨佳宜(1996-),男,博士研究生,研究方向为作物土壤环境化学与烟草栽培生理。E-mail:479998176@qq.com;通信作者:向世鹏,E-mail:xiangshipeng@qq.com;通信作者:周智,zhouzhi@hunau.edu.cn。
