不同密度和施氮量对郑单958产量及农艺性状效应的研究  

Study on the Effect of Different Densities and Nitrogen Application Amounts on the Yield and Agronomic Characters of Zhengdan 958

作　　者：张玮[1] 左晓龙[1] 张会南[1] 童有才[1] 刘泽[1] 

机构地区：[1]安徽省农业科学院玉米研究中心,安徽合肥230031

出　　处：《安徽农业科学》2009年第13期5910-5911,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究不同施氮量和密度水平对郑单958农艺性状和产量的影响。[方法]以郑单958为供试品种,尿素为供试氮肥,研究不同施氮量和密度水平下郑单958在本地区的农艺性状和产量效应。[结果]在相同的密度下,随着施肥量的增加,千粒重逐渐增加,穗粒数逐渐减少,其他性状无明显差异。在相同的施氮水平下,穗粗、穗行数和行粒数随着播种密度的增加而明显增加,达到一定密度时又有所下降。在一定密度下,随着施氮量的提高,郑单958的产量也相应增加。在相同氮肥处理的情况下,不同密度处理的产量随密度的增加而增加,达到一定密度时又有所下降。郑单958在该地区的最佳种植密度为82 500株/hm2,最适宜的追肥量为225.0 kg/hm2。[结论]该研究为郑单958在江淮地区的合理种植奠定了基础。[ Objective] The aim was to study the effect of different nitrogen application amount and density on the agronomic characters and yield of Zhengdan 958. [Method] With 21aengdan 958 as tested variety and urea as tested nitrogen fertilizer, the effect of agronomic characters and yield of Zhengdan 958 in the area under the level of different nitrogen application amount and density were studied. [ Result] Under the same density, 1 000-grain weight was increased, grains per spike was decreased and other characters had no obvious difference with the increment of nitrogen application amount. Under the same nitrogen application level, ear diameter, ear rows and kernels per row were obvious increased with the increment of sowing density, but that was decreased when reached to certain density. Under certain density, the yield of Zhengdan 958 was increased correspondingly with the increment of nitrogen application amount. Under the same nitrogen fertilizer treatment, the yield of Zhengdan 958 with different density treatment was increased with the increment of density, but that was decreased when reached to certain density. The optimum planting density of Zhengdan 958 in the area was 82 500 plants per hm^2 and the suitable fertilizer application amount was 225.0 kg/hm^2. [ Conclusion] The research laid the foundation for the rational planting of Zhengdan 958 in Jianghuai area.

关 键 词：郑单958 施氮量 密度 农艺性状 

分 类 号：S513[农业科学—作物学]