Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (15): 63-71.doi: 10.11924/j.issn.1000-6850.casb2020-0410

Special Issue: 资源与环境 玉米 小麦 烟草种植与生产

Previous Articles     Next Articles

Effect of Nitrogen Fertilizer Management on Soil Nitrogen Residue and the Following Crops Under Wheat-maize Rotation System

Wang Ping1(), Yin Fuwei2, Li Pinghai1, Yan Baoluo1, Zong Yan1, Li Fang1, Liu Xiangpan1, Hou Wei1   

  1. 1Tai’an Academy of Agricultural Sciences, Tai’an Shandong 271000
    2Tai’an Agricultural Technology Extension Station, Tai’an Shandong 271000
  • Received:2020-08-27 Revised:2020-10-28 Online:2021-05-25 Published:2021-05-18

Abstract:

To determine the effect of nitrogen fertilizer management on soil nitrogen residue and the following crops under wheat-maize rotation system, in the present study, different nitrogen fertilizer levels and application stages were set in both mortar black and sandy loam soils. The results showed that the application of nitrogen fertilizer could increase the yield and the accumulation of nitrogen in soil at the ripe stage. Backward nitrogen application could increase soil nitrogen residue, especially the proportion in upper soil. Residual soil nitrogen could increase the yield of the following crops without the application of nitrogen fertilizer, however there was no effect under normal nitrogen application. There was significant difference between mortar black soil and sandy loam soil. At the ripe stage, the accumulation of nitrogen in mortar black soil was more than that in sandy loam soil, especially the distribution in upper layer of soil. The following crops had higher yield in mortar black soil under no nitrogen fertilizer application, but the yield increase in sandy loam soil is significantly higher with nitrogen fertilizer application on the following crops. The results indicate that residual soil nitrogen could increase the yield of the following crops, but that could be eliminated by nitrogen application.

Key words: wheat, maize, soil nitrogen residue, sandy loam soil, mortar black soil

CLC Number: