ACTA AGRICULTURAE BOREALI-SINICA ›› 2019, Vol. 34 ›› Issue (2): 178-186. doi: 10.7668/hbnxb.201751359

Special Issue: Wheat Soil fertilizer

• Environment·Plant Protection • Previous Articles     Next Articles

Nitrogen Absorption of Winter Wheat Influenced by Combined Biofertilizer Replace Chemical Fertilizer

LIU Yuhui1,2, TIAN Xiuping1, ZHANG Qingwen2, ZHANG Aiping2, LIU Xingren2, YANG Zhengli2   

  1. 1. College of Agriculture & Resource & Environment, Tianjin Agriculture University, Tianjin 300384, China;
    2. Institute of Environment & Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2018-12-28 Published:2019-04-28

Abstract: Compound biofertilizers has been identified as an alternative to chemical fertilizer for increasing the soil fertility and crop production in sustainable farming. Nitrogen plays a vital role in the growth and yield of winter wheat, and is one of the main nutrients for water pollution. The use of biofertilizer can not only increase the plant biomass but also improve the total plant N assimilation. To reduce the agricultural source pollution load, a field experiment with five treatments was conducted by reducing the application of chemical fertilizer, and combined with biofertilizers or organic fertilizer to study the overground nitrogen uptake and utilization, and the grain yield of winter wheat in Binzhou, Shandong Province. The five treatments were:CK (N 200 kg/ha, P2O5 120 kg/ha, full dose), B1N2P2 (biofertilizer 1 7.5 kg/ha, N and P2O5 75% of the full dose), B1ON1P1 (biofertilizer 1 7.5 kg/ha, organic fertilizer 3 t/ha, N and P2O5 50% of the full dose), B2N2P2 (biofertilizer 2 7.5 kg/ha, N and P2O5 75% of the full dose); and B2ON1P1 (biofertilizer 2 7.5 kg/ha, organic fertilizer 3 t/ha, N and P2O5 50% of the full dose). The results showed that the application of biofertilizers could increase the overground nitrogen uptake amount of winter wheat at jointing and filling and maturing stages. The use of biofertilizers plus 25% reduction of chemical fertilizer could increase the overground nitrogen uptake rate and leaf SPAD value at jointing and filling stages, and also raise the yield and the rate of nitrogen allocation to grain. The nitrogen uptake efficiency of B2N2P2 was higher than those of biofertilizer 1 and CK. In the harvest time, B2N2P2 had the highest overground nitrogen uptake amount, grain nitrogen uptake amount and yield. In conclusion, the application of biofertilizers plus 25% reduction of chemical fertilizers could promote the nitrogen uptake, and increase the nitrogen harvest index, nitrogen uptake efficiency and nitrogen partial factor productivity of winter wheat, compared with CK.

Key words: Winter wheat, Compound biofertilizer, Nitrogen use efficiency, Overground N uptake amount, N uptake rate

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Cite this article

LIU Yuhui, TIAN Xiuping, ZHANG Qingwen, ZHANG Aiping, LIU Xingren, YANG Zhengli. Nitrogen Absorption of Winter Wheat Influenced by Combined Biofertilizer Replace Chemical Fertilizer[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(2): 178-186. doi: 10.7668/hbnxb.201751359.

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