Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (1): 1-7.doi: 10.11924/j.issn.1000-6850.casb2022-0001

    Next Articles

Effects of Different Nitrogen Treatments on Grain Yield, Nitrogen Utilization Efficiency and Quality of Late-sowing Wheat ‘Huaimai 36’ Following Rice

ZHOU Dongdong1(), ZHANG Jun1, GE Mengjie1, LIU Zhonghong1, ZHU Xiaohuan1, LI Chunyan2()   

  1. 1. Huai’an Agricultural Technology Promotion Center, Huai’an, Jiangsu 223001
    2. Jiangsu Key Laboratory of Crop Genetics and Physiology/ Wheat Research Center, Yangzhou University, Yangzhou, Jiangsu 225009
  • Received:2021-12-27 Revised:2022-03-20 Online:2023-01-05 Published:2022-12-27
  • Contact: LI Chunyan E-mail:1209841308@qq.com;licy@yzu.edu.cn

Abstract:

To optimize the nitrogen fertilizer application technology for high-yield, high-quality and efficient cultivation of late-sowing wheat following rice in Huaibei region of Jiangsu Province, the effects of different nitrogen treatments on yield, nitrogen utilization efficiency and quality of wheat were analyzed by using ‘Huaimai 36’ as the material. The two-factor split-zone test design was adopted with nitrogen application amount (210, 240 and 270 kg/hm2) as main zones, and nitrogen application ratios at different stages (basal: tillering: jointing: booting fertilizer as 0:3:3:4, 0:4:6:0, 3:1:4:2, 3:2:3:2 and 3:3:3:1) as subzones. The results showed that with the increase of nitrogen application amount, the nitrogen agronomic efficiency (NAE), nitrogen apparent recovery efficiency (NARE) and yield increased first and then declined. Compared with those at the N210 and N270 levels, the NAE, NARE and yield at the N240 level were increased by 10.66% and 14.22%, 8.94% and 13.11%, and 13.94% and 0.89%, respectively. Under the condition of same nitrogen application amount, the nitrogen accumulation amount, NAE, NARE, NPE (nitrogen physiological efficiency), NHI (nitrogen harvest index) and grain yield with different basal and topdressing ratios ranked as 3:1:4:2>3:2:3:2>3:3:3:1>0:3:3:4>0:4:6:0. The maximum increase of yield was 15.22%. The results showed that the heavy application of jointing and booting fertilizer was beneficial to improving the nitrogen use efficiency and yield of late-sowing wheat following rice. The 1000-grain weight and grain quality of late-sowing wheat following rice could be improved by postponing nitrogen application appropriately and applying jointing and booting fertilizers separately. Therefore, under the conditions of this experiment, the appropriate nitrogen fertilizer application pattern for synergistically improving yield, nitrogen utilization efficiency and quality is nitrogen rate of 240 kg/hm2 and the dressing ratio of basal: tillering: jointing: booting fertilizer of 3:1:4:2.

Key words: late-sowing wheat following rice, nitrogen application amount, nitrogen planning and management, nitrogen utilization efficiency, yield, quality

CLC Number: