Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (3): 136-144. doi: 10.7668/hbnxb.20192659

Special Issue: Corn Soil fertilizer

• Resources & Environment · Plant Protection • Previous Articles     Next Articles

Effects of Urea Reduction with UAN on Dry Matter Accumulation and Nitrogen Efficiency of Spring Maize under Shallow Buried Drip Irrigation

TAI Jicheng, HAN Meiqi, YANG Hengshan , ZHANG Yuqin, MA Jinhui, GUO Xiaoxu   

  1. College of Agriculture,Inner Mongolia Minzu University,Engineering Research Center of Forage Crops of Inner Mongolia Autonomous,Tongliao 028043,China
  • Received:2022-03-22 Published:2022-06-30
  • Contact: YANG Hengshan

Abstract:

In order to explore a new way to reduce nitrogen and increase efficiency of spring maize,in the agricultural high tech demonstration park of Horqin district,Inner Mongolia,two different ratios of reduced urea gradients and corresponding combined application of urea ammonium nitrate solution(UAN)were set in comparison with conventional topdressing urea(CK1,570 kg/ha)(N1U treatment 225 kg/ha urea + 75 kg/ha UAN and N2U treatment 375 kg/ha urea + 75 kg/ha UAN),the effects of shallow drip irrigation with reduced urea application combined with compared with CK treatment,N2U treatment did not reduce the yield of spring maize when the total nitrogen input was reduced by 25.12%.The total nitrogen input of N1U treatment decreased by 51.42%,and the yield decreased significantly.The total dry matter accumulation of N2U treatment was also significantly higher than that of CK treatment,and increased by 12.84%-16.40% and 6.05%-9.76% at silking stage and mature stage,respectively.Compared with CK,the total nitrogen accumulation in the mature stage increased by 20.55%-42.29%.N2U treatment did not reduce the yield of spring maize under the condition of 25.12% reduction of total nitrogen input,and it was a more reasonable fertilization mode of shallow buried drip irrigation for maize under the same soil fertility in the Xiliaohe plain.

Key words: Spring maize, Shallow buried drip irrigation, UAN, Xiliaohe plain, Nitrogen efficiency

Cite this article

TAI Jicheng, HAN Meiqi, YANG Hengshan, ZHANG Yuqin, MA Jinhui, GUO Xiaoxu. Effects of Urea Reduction with UAN on Dry Matter Accumulation and Nitrogen Efficiency of Spring Maize under Shallow Buried Drip Irrigation[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(3): 136-144. doi: 10.7668/hbnxb.20192659.

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