%0 Journal Article %A GUO Rui %A HUANG Xiaogao %A WEN Mingxing %A CHEN Chen %A LIU Juge %A SHAN Yanbo %A QU Chaoxi %A LI Dongsheng %T Effect of the Nitrogen Topdressing and Plant Density on Grain Yield and Quality of Spring Strong Gluten Wheat Cultivar Zhenmai 12 %D 2020 %R 10.11869/j.issn.100-8551.2020.08.1834 %J Journal of Nuclear Agricultural Sciences %P 1834-1839 %V 34 %N 8 %X In order to verify the optimum nitrogen application rate and plant density for high yield and quality of strong gluten wheat, the cultivar Zhenmai 12 was used as the tested material. The experiments were conducted to study the effects of plant density (225×104, 300×104and 375×104 seedlings·hm-2) and nitrogen application rate (90, 120, 150 and 180 kg·hm-2) on the grain yield and quality of Zhenmai 12. The results showed that the nitrogen application and plant density significantly affected on grain yield and its components of Zhenmai 12. The grain yield increased with increasing of nitrogen application, until the nitrogen level was in advance of 150 kg N·hm-2. However, the grain yield decreased when the plant density was over 225×104 seedlings·hm-2. The content of crude protein and wet gluten and the dough stable time were significantly increased with the improvement of nitrogen topdressing amount. Within a certain planting density, the content of crude protein and wet gluten in seeds enhanced slightly with the increase of plant density, but there were no apparent differences in grain water absorption and dough stable time. Under the conditions of this experiment, the optimal nitrogen topdressing amount and plant density to enhance the yield and quality of Zhenmai 12 were 150kg N·hm2 and 225×104seedlings·hm-2, respectively. The research provided a theoretical basis for the determination of suitable nitrogen amount and plant density in strong gluten wheat with different cultivars. %U https://www.hnxb.org.cn/EN/10.11869/j.issn.100-8551.2020.08.1834