Effects of Slow-release Nitrogen Fertilizer on Yield and Nitrogen Accumulation of Summer Maize in Shajiang Black Soil Area  

作　　者：Yongfeng XING Changmin WEI Guoli CHEN Weimeng XU Wanyou SONG Guizhi LI Wenwei ZHOU Yanwei WAN Enzhong ZHOU Weifang LI 

机构地区：[1]Zhoukou Academy of Agricultural Sciences,Zhoukou 466000,China

出　　处：《Agricultural Biotechnology》2024年第2期72-74,共3页农业生物技术（英文版）

基　　金：Supported by National Key Research and Development Program of China(2017FYD0101406);Zhoukou Comprehensive Test Station of Henan Provincial Corn Industry Technology System(HARS-22-02-Z5)。

摘　　要：[Objectives] This study was conducted to verify the field application effect of slow-release nitrogen fertilizer on summer maize in Shajiang black soil area by simultaneous sowing and fertilization, and explore the application scope and nitrogen metabolism mechanism, so as to lay a foundation for fertilizer reduction and efficiency improvement. [Methods] With maize variety Beiqing 340 and sulfur-coated urea as experimental materials, five nitrogen application levels were set, namely, control (C0), slow-release nitrogen 70 kg/hm^(2) (C70), slow-release nitrogen 140 kg/hm^(2) (C140), slow-release nitrogen 210 kg/hm^(2) (C210) and slow-release nitrogen 280 kg/hm^(2) (C280). The phosphorus and potassium fertilizers were all in accordance with the unified standard. [Results] With the application rate of slow-release nitrogen increasing, the nitrogen accumulation in organs increased first and then decreased after tasseling stage of maize. In order to reduce the fertilizing amount and increase efficiency, 210 kg/hm^(2) of slow-release nitrogen fertilizer was the best fertilizing amount for summer maize in Shajiang black soil area. [Conclusions] This study provides reference for fertilizer reduction, efficiency improvement and sustainable development of summer maize in Shajiang black soil area.

关 键 词：Slow-release nitrogen fertilizer Shajiang black soil Summer maize Nitrogen metabolism YIELD 

分 类 号：S513[农业科学—作物学]