烟草科技2019，Vol.52Issue(8)：16-23,8.
基于四川凉山烟区大田试验的腐熟农家肥矿化规律分析
Mineralization of well-rotten farmyard manure in experimental fields in tobacco-planting areas of Liangshan in Sichuan
摘要
Abstract
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 60th day after burial, the mineralization rates of carbon and nitrogen were 65.13% 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.关键词
植烟土壤/肥力/农家肥/有机碳/有机氮/矿化率Key words
Tobacco-planting soil/Fertility/Farmyard manure/Organic carbon/Organic nitrogen/Minerali-zation rate分类
农业科技引用本文复制引用
陈宇,于建军,凌爱芬,李少鹏,李方新,岳东林,卢剑,叶协锋,武云杰,范文思..基于四川凉山烟区大田试验的腐熟农家肥矿化规律分析[J].烟草科技,2019,52(8):16-23,8.基金项目
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). （201562000034160）
