摘要
试验选用辽单565、先玉335、郑单958、丹玉2166、丹玉39等5个玉米品种,每个品种设4个氮素水平处理。经农艺、生理性状的分析研究,结果表明:就同一玉米品种而言不同氮素水平对各个性状的影响有一定的差异,同一品种株高、穗位变化随着氮素水平的增加而增高,穗长、穗行数、行粒数变化基本稳定。辽单565、郑单958在不同氮素水平下百粒重之间差异很大;随着氮素水平的增加,光合速率有上升的趋势;叶面积指数有下降趋势,不同氮素水平间其差异较大;不同品种的叶绿素含量不同,随氮素的变化,差异也较大;辽单565在不同氮素水平下的产量差异不显著,其次是丹玉39,而先玉335、郑单958、丹玉2166不同的氮素水平间产量达显著水平,说明辽单565和丹玉39属于对氮素利用较高的品种。
Five maize varieties have been selected in this experiment,which were respectively Liaodan 565, Xianyu335,Zhengdan 958, Danyu2166 and Danyu39. Each variety has 4 levels of nitrogen. Through the research on agronomic, Physiological traits, the results showed that as far as the same variety is cornered, different nitrogen levels have different effects on various trairs of maize. Under different nitrogenous levels,the changes of plant height and ear height position for the same variety increased with the increased of nitrogen level, and the changes of ear length, ear rows and row grains tended to be stable. The differences of 100-seed weight is great between Liaodan 565 and Zhengdan 958 in different nitrogen levels. With the increased of nitrogen level, the photosynthetic rate has the tendency for increase, while leaf area index has the tendency for decrease, and there is great difference in different nitrogen levels. For different varieties, the chlorophyll content is different,and the difference is also greater with the change of nitrogen level. For Liaodan 565 ,the difference of output under different nitrogen levels was not significant, next came Danyu39, while for Xianyu335 ,Zhengdan958, Danyu2166,the output in different nitrogen levels reached significant level. The result indicate that Liaodan565 and Danyu39 are the high nitrogen utilization efficiency varieties.
出处
《辽宁农业科学》
2009年第4期8-11,共4页
Liaoning Agricultural Sciences
基金
国家粮食丰产科技工程(2006BAD02A12)
关键词
氮素水平
玉米
产量
农艺性状
Nitrogen levels
Maize
Yield
Agronomic traits
