河南农业科学2011，Vol.40Issue(10)：59-63,5.
氮肥分期施用对不同土体构型玉米生长和养分利用的影响
Effects of Different Soil Configurations and Nitrogen Application Stages on Corn Growth and Nitrogen Utilization
摘要
Abstract
To explore the effect of different soil configurations on corn production and fertilizer use in alluvial soil area,the experiments of different nitrogen(0,90,180,270,360,450kg/ha)applied in stages on corn were carried out on clip sandy loam and sandy loam with bottom clay in Qingfeng county. The results showed that nitrogen application in stages had a positive- effect on growth and development of corn. The number of blades increased by 1 - 2 leaves compared with CK after tasseling-booting stage,and the height increased by 0. 04-0.16 m after small bell stage. The height of corn under N 90 kg/ha once, N 90 kg/ha twice, N 270kg/ha twice, N 360kg/ha twice on clip sandy loam was higher than that under the same treatment on sandy loam with bottom clay after tasseling-booting stage, except CK, and the others were lower. And the stem diameter was lower than that on sandy loam with bottom clay,except the treatment 8. The ear length, the ear weight per panicle and the 100-grain weight increased by 1. 0-2. 5 cm,16 - 68 g,and 2. 0- 3. 0 g, respectively compared with CK. The yield under different nitrogen topdressing on clip sandy loam increased by 8. 00% -96. 85% compared with CK,and the best one was the treatment of 360 kg/ha by 2 times. The yield under different nitrogen topdressing on sandy loam with bottom clay increased by 10. 29% - 110. 02% compared with CK, and the best one was the treatment of 450 kg/ha by 2 times. The production-increase effect on sandy loam with bottom clay was better than that of clip sandy loam. The fertilizer use efficiency under N 90 kg/ha and N 180 kg/ha with application twice was better in two soil texture. Considering the yield and nitrogen utilization,the best volume of nitrogen fertilizer for the sandy loam with bottom clay was 180-270 kg/ha with application twice,and that for clip sandy loam was 270-360 kg/ha with application twice. Therefore,different amounts of nitrogen fertilizer should be chosen for different soil configuration in order to improve the economic yield and the efficiency of fertilizer use.关键词
土体构型/玉米/产量/分期施肥/氮肥利用Key words
Soil configuration/ Corn/ Yield/ Fertilization by stages/ Nitrogen fertilizer use分类
农业科技引用本文复制引用
武继承,张毅,刘东亮,任玲,陈晓燕..氮肥分期施用对不同土体构型玉米生长和养分利用的影响[J].河南农业科学,2011,40(10):59-63,5.基金项目
河南省重大社会公益性科研项目(081100911600) （081100911600）
