不同覆盖方式鼠茅草养分吸收规律  

Study about Vulpia myuros C.Gmelin Nutrient Absorption under Different Covering Methods

作　　者：吕鹏超 隋方功[1] 梁斌[1] 李俊良[1] 李晓书[1] 刘庆花[1] 

机构地区：[1]青岛农业大学资源与环境学院,山东青岛266109

出　　处：《青岛农业大学学报（自然科学版）》2015年第2期137-140,共4页Journal of Qingdao Agricultural University(Natural Science)

基　　金：国家自然科学基金项目(31270382);绿肥作物生产与利用技术集成研究与示范(201103005)

摘　　要：进行田间试验,研究了在不同覆盖方式下,果园人工生草鼠茅草的养分吸收规律。结果表明：覆盖方式不同,鼠茅草（Vulpia myuros C.Gmelin）干物质产量不同。全覆盖种植、畦面种植、畦背种植的干物质总量分别为16378.54kg/hm^2、13 921.76kg/hm2、6 942.60kg/hm^2,鼠茅草一个生命周期的干物质产量为全覆盖种植〉畦面种植〉畦背种植。拔节期是鼠茅草氮磷钾养分积累最快的时期,而苗期和成熟期则相对较慢。鼠茅草生育期内氮、钾最大累积量分别高达146.70kg/hm2、126.73kg/hm^2,磷累积量则相对较小。生产上应该在鼠茅草拔节期追施225-300kg/hm^2的尿素,用以保证鼠茅草生产足够的干物质。Field tests study the nutrient absorbed regulation of orchard artifical grass.Tests show,the dry matter yield of Vulpia myuros C.Gmelin was different under different covering methods.The dry matter yield of full coverage planting,ridge surface planting and ridge back planting was 16 378.54kg/hm^2、13921.76kg/hm^2、6 942.60kg/hm^2,mainly for full coverage planting ridge surface planting ridge back planting.Jointing stage is the fastest time that Vulpia myuros C.Gmelinhas accumulated nutrients（N、P、K）,Seeding stage and Maturity stage was the nutrient accumulation period of relatively slow.The number of nitrogen accumulate was as the same as the number of potassium accumulate,the maximum accumulate was 146.70kg/hm^2、126.73kg/hm^2,phosphorus accumulate was relatively small.It should be done that applying the right amount of urea（225~300kg/hm^2）in Vulpia myuros C.Gmelinjointing stage,its purpose is to ensure the normal growth of the Vulpia myuros C.Gmelin.

关 键 词：鼠茅草 全覆盖种植 畦面种植 畦背种植 

分 类 号：S642.201[农业科学—蔬菜学]