以黄淮海22个主栽玉米品种为材料，设计不施氮(N0)、施氮量158 kg/hm²(N1)和225 kg/hm²(N2)3个氮肥处理；不灌水(W0)和灌水(W1)两个灌溉处理，研究不同水氮调控对子粒蛋白质含量、产量及产量构成的影响。结果表明，高产型品种(Ⅲ型)穗长、穗粗、穗粒数、千粒重、产量等均高于中(Ⅱ型)、低(Ⅰ型)产型品种。与W0处理相比，W1处理增加了Ⅰ、Ⅱ型夏玉米子粒清蛋白和谷蛋白含量但降低了球蛋白含量，增加了Ⅲ型夏玉米球蛋白含量但降低了清蛋白和谷蛋白含量，增加了Ⅰ、Ⅲ型总蛋白质含量，同时降低了3种类型醇溶蛋白含量。在158 kg/hm²氮肥处理和灌水条件下，3种类型夏玉米产量均最高。

In this experiment, 22 main cultivars from the Huang-Huai-Hai region were selected as materials. Three treatments of nitrogen application with no nitrogen application(N0), 158 kg/ha nitrogen application(N1) and 225 kg/ha nitrogen application(N2), and two treatments of irrigation with no irrigation(W0) and irrigation(W1) were designed to investigate the effects of different water and nitrogen treatments on protein content, yield and its components of different types of summer maize. The results showed that the ear length, ear diameter, kernel number per ear, 1 000-kernel weight and yield of high-yield maize varieties were higher than those of middle-low yield maize varieties. Compared with W0, W1 treatment increased the grain albumin and gluten but decreased globulin content of type Ⅰ and Ⅱ summer maize, as well as increased the grain globulin but decreased albumin and gluten content of type Ⅲ summer maize. Besides, the treatment of W1 increased the grain total protein content of type Ⅰ and Ⅲ summer maize, relative to W0. Meanwhile, W1 decreased the grain prolamin content of three types summer maize, compared to W0. In generally, the treatment of irrigation with the N application rate of 158 kg/ha approached the highest yield for the three types of summer maize among the trials in this field experiment.

S513.062

河南省玉米产业技术体系建设项目(HARS-22-02-G2)、河南省重大科技专项(241100110300，231100110200)、中央引导地方科技发展资金项目(Z20241471133)、河南省农业科学院科技创新团队项目(2024TD31)、国家重点研发计划项目(2022YFD2300805，2022YFD2300803)