摘要
为探究SPAD值在烤烟氮素养分诊断中的作用,以云烟100为试材,设置了6个不同氮肥水平的田间试验,分析了烤烟叶片SPAD值与氮素营养诊断指标、施氮量的关系以及施氮量对产量的影响。结果得出产量与施氮量呈二次函数关系,函数关系式为Y=-0.07X^(2)+18.07X+2165.34,根据产量与施氮量的关系确定了最佳经济施肥量,为124.5 kg/hm^(2),对应的最佳经济产量为3330.4 kg/hm^(2);建立了基于叶片SPAD值的烤烟氮肥推荐施肥标准。其中最适SPAD值范围为37.11~46.06,可作为团棵期和旺长期氮素营养诊断的指标,并能推荐氮肥的施用。
In order to explore the role of SPAD value in the diagnosis of nitrogen nutrients in flue-cured tobacco,using Yunyan 100 as the test material,6 field trials were set up with different nitrogen fertilizer levels,the relationship between SPAD value of flue-cured tobacco leaves,nitrogen nutrition diagnostic indicators,and nitrogen application rate were analyzed and the effect of nitrogen application rate on yield was investigated.The results showed that the yield and nitrogen application rate were related by quadratic function,which was Y=-0.07X^(2)+18.07X+2165.34.According to the relationship between yield and nitrogen application rate,the optimal economic fertilization rate was determined to be 124.5 kg/hm^(2),and the corresponding optimal economic yield was 3330.4 kg/hm^(2).The recommended fertilization standard for flue-cured tobacco based on the leaf SPAD value was established.Among them,the most suitable SPAD range was 37.11~46.06,which can be used as an index for the diagnosis of nitrogen nutrition in the resettling group tree stage and prosperous stage,and the application of nitrogen fertilizer can be recommended.
作者
边立丽
艾栋
陈玉蓝
常乃杰
黎昌明
龙潭
冯文强
陈曦
张云贵
刘青丽
蒋寿安
李志宏
BIAN Li-li;AI-Dong;CHEN Yu-lan;CHANG Nai-jie;LI Chang-ming;LONG-Tan;FENG Wen-qiang;CHEN Xi;ZHANG Yun-gui;LIU Qing-li;JIANG Shou-an;LI Zhi-hong(Institute of Agricultural Resources and Agricultural Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081;Liangshan Prefecture Branch of Sichuan Tobacco Company,Xichang Sichuan 615000;Sichuan Branch of China National Tobacco Corporation,Chengdu Sichuan 610041;Zhengzhou Tobacco Research Institute,China National Tobacco Corporation,Zhengzhou Henan 450001)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2022年第5期177-183,共7页
Soil and Fertilizer Sciences in China
基金
基于大数据的烤烟营养监测和调控关键技术研究与应用(SCYC202005)
四川典型植烟土壤碳平衡研究与应用(SCYC201702)。
关键词
烤烟
SPAD值
氮素
营养诊断
推荐标准
flue-cured tobacco
SPAD value
nitrogen
nutritional diagnosis
recommended standards