Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (3): 158-166. doi: 10.7668/hbnxb.20194150

Special Issue: Soil fertilizer

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

Effects of Partial Substitution of Chemical Fertilizer by Organic Fertilizer on Growth,Quality and Nitrogen Efficiency of Quality Wheat

CUI Yongzeng1, YAO Haipo1, LI Qian1, YAO Yanrong1, LÜ Lihua1, WU Liyong2, ZHAI Lichao1, JIA Xiuling1   

  1. 1 Scientific Observing and Experimental Station of Crop Cultivation in North China,Ministry of Agriculture,Key Laboratory of Crop Cultivation Physiology and Green Production in Hebei Province,Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050035,China
    2 Agricultural Technology Extension Center,Ningjin County,Xingtai 055550,China
  • Received:2023-03-30 Published:2023-06-28

Abstract:

Partial substitution of chemical fertilizer with organic fertilizer is being increasingly recognized as a promising approach for achieving sustainable agriculture.This paper explores the proportion of organic fertilizer substitution nitrogen fertilizer,physiological basis for stable yield after substitution nitrogen fertilizer,and the effect of spraying liquid nitrogen after substitution nitrogen fertilizer in North China,in order to provide a basis for the technology of reducing nitrogen fertilizer and increasing yield and efficiency of winter wheat in this region.Field experiments of the following eight treatments were conducted in Ningjin,Hebei from 2020 to 2022:T1,non-nitrogen,application of chemical P and K fertilizer alone;T2,application of chemical N,P and K fertilizer alone;and T3- T7,substitution of 20%,40%,60%,80%and 100% the chemical N rate of T2 with organic fertilizer,respectively;T8,substitution of 100% chemical N rate of T2 with organic fertilizer,and spraying liquid nitrogen fertilizer at the erecting stage.The results showed that the organic fertilizer substitution rate of 29.5%-66.7% and the 100% substitution rate+liquid nitrogen treatment had higher wheat yield,and their yield was comparable to the CK.Under this fertilization condition,the leaf area index and leaf SPAD value were also higher at most stages,which was the physiological basis for stable yield after replacing chemical fertilizer with organic fertilizer.When the organic fertilizer substitution rate was greater than 40%,the wheat grain quality was higher,especially when the organic fertilizer substitution rate was 40%,the stability time,tensile area,and maximum tensile resistance were increased by 17.8%,23.5%,and 9.1%,respectively,compared to the CK.The nitrogen efficiency indicators of the CK,40% substitution rate,and 100% substitution rate+liquid nitrogen fertilizer treatments mostly performed better,with higher nitrogen uptake of grain,nitrogen fertilizer efficiency and nitrogen uptake efficiency.Substitution of chemical fertilizer with organic fertilizer significantly increased the nitrate nitrogen content in soil 0-80 cm from the erecting to the filling stage and 0-60 cm at the mature stage,resulting in a phenomenon of surface accumulation of soil nitrate nitrogen.The higher the replacement rate of organic fertilizer,the higher the nitrate nitrogen content in this layer of soil.Replacing nitrogen fertilizer with organic fertilizer could significantly reduce the nitrate nitrogen content of 80-100 cm soil in the mature stage,thereby reducing the risk of nitrogen leaching in the rainy season.Based on the above conclusions,the treatment of 40% substitution rate and 100% substitution rate+liquid nitrogen fertilizer had excellent wheat yield,quality,and nitrogen efficiency,with significant benefits.

Key words: Wheat, Organic fertilizer, Yield, Quality, Nitrogen efficiency

Cite this article

CUI Yongzeng, YAO Haipo, LI Qian, YAO Yanrong, LÜ Lihua, WU Liyong, ZHAI Lichao, JIA Xiuling. Effects of Partial Substitution of Chemical Fertilizer by Organic Fertilizer on Growth,Quality and Nitrogen Efficiency of Quality Wheat[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(3): 158-166. doi: 10.7668/hbnxb.20194150.

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