摘要
为揭示腐熟农家肥在烟田土壤中的矿化规律,选用玉米秸秆和猪粪混合而成的腐熟农家肥并采取砂滤袋田间原位培养法研究了四川省凉山州宁南烟区腐熟农家肥中有机碳、氮的矿化特征,及其对土壤腐殖酸组分和速效氮、磷、钾含量的影响。结果表明:农家肥中碳、氮养分在肥料施入前期(掩埋后30d)矿化速率较快。在掩埋后60d时,碳、氮的矿化率分别为65.13%和46.26%,分别占烟草全生育期碳、氮矿化率的80.07%和92.39%;掩埋60d后,没有出现供氮高峰,满足了烟草“前促后控”的需肥规律。农家肥能维持土壤速效氮、磷和钾含量在相对较高水平上,可为烤烟生长提供充足的养分;农家肥还促进了土壤胡敏酸和富里酸的形成和积累,尤其在烟草生育后期,能明显提高土壤胡富比,改善土壤环境。
To investigate the mineralization of farmyard manure in tobacco-planting soils, a well-rotten farmyard manure was made which contained corn straw and pig manure. An in-situ cultivation method with sand filter bags was applied to study the mineralization characteristics of organic carbon and organic nitrogen in the well-rotten farmyard manure and its effects on humus acid composition and the contents of available nitrogen, phosphorus and potassium in Ningnan tobacco-planting areas of Liangshan in Sichuan Province. The results showed that the mineralization rates of carbon and nitrogen in the manure were higher at the early stage of fertilizer application(within 30 days after burial). On the 60 th day after burial, the mineralization rates of carbon and nitrogen were65.13% and 46.26%, accounted for 80.07% and 92.39% of the total mineralization rates of carbon and nitrogen during the whole tobacco growth and development stage, respectively. There was no nitrogen supply peak 60 days after burial, which satisfied the tobacco fertilizer requirement of"pre-promotion and post-control". The farmyard manure maintained relatively higher contents of available nitrogen, phosphorus and potassium in soils to provide sufficient nutrients for the growth of flue-cured tobacco. Furthermore, farmyard manure promoted the formation and accumulation of humic acid(HA) and fulvic acid(FA) in soils, especially at the later stage of tobacco growth.It also significantly raised HA/FA ratio in soils and improved soil environment.
作者
陈宇
凌爱芬
李少鹏
李方新
岳东林
卢剑
叶协锋
武云杰
范文思
于建军
CHEN Yu;LING Aifen;LI Shaopeng;LI Fangxin;YUE Donglin;LU Jian;YE Xiefeng;WU Yunjie;FAN Wensi;YU Jianjun(Tobacco Science College of Henan Agricultural University,Zhengzhou 450002,China;Liangshan Branch of Sichuan Provincial Tobacco Company,Xichang 615000,Sichuan,China;China Tobacco Jiangsu Industrial Co.,Ltd.,Nanjing 210000,China;China Tobacco Gansu Industrial Co.,Ltd.,Lanzhou 730000,China;Ningnan County Company of Sichuan Provincial Tobacco Company,Ningnan 615400,Sichuan,China)
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2019年第8期16-23,共8页
Tobacco Science & Technology
基金
甘肃烟草工业有限责任公司资助项目“甘肃中烟·兰州品牌-宁南倮格基地单元建设”（201562000034160）
关键词
植烟土壤
肥力
农家肥
有机碳
有机氮
矿化率
Tobacco-planting soil
Fertility
Farmyard manure
Organic carbon
Organic nitrogen
Mineralization rate
