黄淮海农区超高产种植模式下玉米氮营养特性的研究  

Study on the Nitrous Nutrient Identity in Different Cultivations in Huanghuai Hai Area

作　　者：郝艳如[1] 劳秀荣[1] 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018

出　　处：《中国农学通报》2002年第3期6-9,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然科学资金资助项目 (3 9870 5 2 4)

摘　　要：初步研究探讨了黄淮海农区冬小麦‖早春玉米 /夏玉米 (简称间作玉米 )、春玉米单作、冬小麦—夏玉米 (简称单作夏玉米 )轮作 3种超高产种植模式下玉米的氮营养特性。结果表明 ,间作提高了玉米产量 ,但在高肥水平下氮吸收效率却低于当量面积单作 ;在中肥和无肥水平下 ,间作氮利用效率高于单作 ,吸收效率低于单作。在作物共生期间 ,养分吸收存在着竞争和补偿作用 ,使得间作玉米氮吸收量在每个生育期都不同于单作。间作提高了夏玉米氮素向籽粒的转移强度 ,而春玉米只在不施肥时有这种趋势。In Huanghuai area,nitrogen absorption and utilization efficiency in three super high yield cropping patterns have been studied:①winter wheat‖early spring maize/summer maize;②early spring maize monocropping;③ winter wheat/summer maize. The result showed that: intercropping improved the corn yield and nitrous utilization efficiency and decreased the absorption efficiency; there are nutrients competition and compensation in intercropping. Transfer intensity of nutrients from frond to seed was increased when the summer corn were planted in mode of intercropping. However, spring corn has this trait only in no-fertilizer level.

关 键 词：黄淮海农区 超高产种植模式 玉米 氮 营养特性 小麦 间套作 

分 类 号：S51[农业科学—作物学] S344