Growth, yield components and micronutrient nutrition of field-grown maize (Zea mays L.) as affected by nitrogen fertilization and plant density
Growth, yield components and micronutrient nutrition of field-grown maize (Zea mays L.) as affected by nitrogen fertilization and plant density
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施氮肥和植物密度对田间种植玉米 (Zea mays L.) 的生长、产量构成和微量营养素营养的影响
DOI：
10.1007/bf01050279
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
O. Ologunde
中科院分区：
文献类型：
--
作者：
V. Ogunlela;G. M. Amoruwa;O. Ologunde
施用50 ~ 200 kg N ha−1氮肥可促进大田玉米（Zea maysL.）的生长和产量。施氮量增加到100或150 kg N ha - 1时，穗径、粒深、粒料比、穗数、株高和干物质产量均增加。施氮可促进玉米抽雄。株密度从25000 ~ 75000株ha - 1增加，株高、干物质产量和抽雄延迟增加，但穗径、粒深、粒料比和穗数减少。增加供氮量和密度对穗叶中Mn、Zn、Cu和Fe的浓度没有影响；随着施氮量的增加，至150 kg N ha−1，土壤中Mn浓度逐渐升高。氮素与株密度的交互作用对玉米穗叶微量元素浓度影响不显著。
Growth and yield components in field-grown maize (Zea maysL.) were enhanced by nitrogen fertilization ranging from 50 to 200 kg N ha−1. Ear diameter, kernel depth, grain: stover ratio, number of ears plant−1, plant height and dry matter production increased as N fertilization rate was increased up to 100 or 150 kg N ha−1. Tasselling in maize was hastened by N fertilization. Increasing plant density from 25000 to 75000 plants ha−1increased plant height, dry matter production and delayed tasseling but reduced ear diameter, kernel depth, grain: stover ratio and number of ears plant−1. Increased N supply and plant density had no influence on the concentrations of Mn, Zn, Cu, and Fe in ear leaf; except that Mn concentration increased as N fertilization rate was increased up to 150 kg N ha−1. Nitrogen × plant density interactions on the concentrations of the micronutrients in maize ear leaf were not significant.