河南农业科学Issue(12)：70-74,5.
氮肥分期追施对潮土区不同玉米品种生长发育及产量的影响
Effects of Staging Fertilization on Grow th and Yield of Differen Corn Varieties in Alluvial Soil in the East of Henan Province
摘要
Abstract
In order to investigate the effects of staging fertilization on the grow th and yield of dif-ferent corn varieties in alluvial soil in the east of Henan province ,the effects of traditional fertili-zation and different nitrogen amount in topdressing stages (180 kg/ha ,270 kg/ha ,360 kg/ha , amount of nitrogen topdressing in small horn stage and booting stage was 50% respectively) on growth and yield of eight corn varieties were studied in Tongxu county ,of which corn varieties in-cluding Xiandan 158 ,Zhengdan 958 ,Zhongbo Zhengdan 23 ,Jidan 7 ,Liyu 16 ,Xundan 20 ,Liyu 37 and Dika M9 .The results showed that compared to traditional fertilization ,there was positive effect on corn grow th with staging fertilization ,the number of visible leaves of Xiandan 158 and Xundan 20 increased 1-2 leaves ,the plant height of different varieties increased 2 .7 cm to 83.6 cm ,the stem diameter increased 0 .1 cm to 0 .6 cm except Xundan 20 ,and their row s per ear ,grain number per spike ,ear length ,ear diameter and 100-grain weight were obvious different too .Com-pared to traditional fertilization ,the yield of staging nitrogen topdressing 180 kg/ha increased o-verall by 0 .23% to 34 .42% ,the yield of staging nitrogen topdressing 270 kg/a and 360 kg/ha in-creased by 1 .63% -32 .35% ,0-14 .60% respectively ,except Jidan 7 and Liyu 16 ,indicating that the demand of nutrients of different corn varieties had obvious difference ;compared to staging ni-trogen topdressing 180 kg/ha ,only the yield of Xundan 20 stably increased 0 .48% and 2 .34% re-spectively under staging nitrogen topdressing 270 kg/ha and 360 kg/ha ,w hich indicated that Xun-dan 20 had certain yield-increasing effect at the higher fertilizer ;compared to staging nitrogen top-dressing 270 kg/ha ,the yield increased 0 .97% to 8 .43% except Xiandan 158 ,Zhongbo Zhengdan 23 and Dika M9 .In a word ,the effect of production increasing with staging nitrogen topdressing 180 kg/ha is the best ,and the best varities are Zhengdan 958 ,Liyu 37 and Xundan 20 in different fertilization according to the yield stability performance of different varieties .关键词
潮土区/玉米/氮肥/分期施肥/产量Key words
alluvial soil/corn/nitrogen fertilizer/staging fertilization/yield分类
农业科技引用本文复制引用
武继承,杨永辉,李学军,潘晓莹,韩伟锋..氮肥分期追施对潮土区不同玉米品种生长发育及产量的影响[J].河南农业科学,2013,(12):70-74,5.基金项目
公益性行业（农业）科研专项（201203077）；河南省重大公益性科研项目 （）
