草业学报2025，Vol.34Issue(10)：74-84,11.DOI:10.11686/cyxb2024453
种植翻压光叶紫花苕配合氮肥减施提高烤烟产量和土壤质量
Planting and incorporation of smooth vetch together with reduced nitrogen fertilizer application enhances tobacco yield and soil quality
摘要
Abstract
The overall aim of our research was to provide a theoretical basis and technical approach to reduce fertilizer use and improve fertilizer use efficiency during tobacco production in Yunnan.To this end,we conducted an experiment in which different amounts of smooth vetch(Vicia villosa)were incorporated together with reduced application rates of nitrogen fertilizer to tobacco(Nicotiana tabacum),and the yield and soil quality were evaluated.The field experiment commenced in 2017,and the impacts of planting and incorporating varying amounts of smooth vetch together with 30%and 15%reductions in the nitrogen fertilizer application rate on tobacco yield and soil quality were evaluated in 2022.Compared with the conventional fertilization practice of fallow-tobacco(control-F100),incorporating 22500 to 30000 kg·ha-1 green manure with a 15%and 30%reduction in the nitrogen fertilizer application rate significantly increased tobacco yield by 4.85%-9.94%(P<0.05).The incorporation of smooth vetch with reduced nitrogen fertilizer application also improved soil nutrient properties.Specifically,the treatment with 30000 kg·ha-1 green manure incorporation and a 30%reduction in the nitrogen fertilizer rate resulted in the highest soil organic matter and soluble organic nitrogen contents,which were increased by 28.2%and 242.6%,respectively,compared with those in the control(P<0.05).Incorporation of smooth vetch at rates of 22500 and 30000 kg·ha-1,in conjunction with a 30%reduction in the nitrogen application rate,increased the soil quality index by 49.1%and 72.9%,respectively,compared with that in the control(P<0.05).Under different nitrogen application levels,the activities of hydrolytic enzymes associated with soil carbon,nitrogen,and phosphorus increased with increasing amounts of incorporated green manure.Partial least squares path modeling and random forest analyses indicated that tobacco yield was primarily influenced by the soil organic matter content and enzyme activity.Therefore,planting and incorporating green manure with the linked reduction of nitrogen fertilizer enhanced both tobacco yield and soil quality,with outstanding effects observed at 22500 to 30000 kg·ha-1 of smooth vetch incorporation with a 30%reduction in nitrogen fertilizer.关键词
烤烟/绿肥/氮肥减施/产量/土壤质量/土壤酶活性Key words
tobacco/green manure/nitrogen fertilizer reduction/yield/soil quality/soil enzyme activity引用本文复制引用
赵文军,李湘伟,付利波,尹梅,周国朋,陈华,曹卫东,梁婷,王剑松,刘魁,冯瑜,王正旭,徐梓荷,朱云聪,孙蒙猛..种植翻压光叶紫花苕配合氮肥减施提高烤烟产量和土壤质量[J].草业学报,2025,34(10):74-84,11.基金项目
红塔集团科技项目(高原湖泊径流区优质烟叶生产高质量发展技术体系研究,2022YL02)和国家绿肥产业技术体系项目(CARS-22)资助. （高原湖泊径流区优质烟叶生产高质量发展技术体系研究,2022YL02）
