ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (1): 149-157. doi: 10.7668/hbnxb.20190377

Special Issue: Wheat

• Resource and Environment·Plant Protection • Previous Articles     Next Articles

Effects of Biochar Addition on Yield and Water Use Efficiency of Winter Wheat under Different Irrigation Conditions

DONG Fei1, YAN Qiuyan1,2, DUAN Zengqiang2, LI Feng1, LU Jinxiu1, YANG Feng1, LI Xun2, WANG Miao1, JIA Yaqin1   

  1. 1. Institute of Wheat, Shanxi Academy of Agricultural Sciences, Linfen 041000, China;
    2. State Key Laboratory of Soil and Sustainable Agriculture, Nanjing Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
  • Received:2019-09-30 Published:2020-02-28

Abstract: To explore effect of winter wheat yield response to biochar addition in different irrigation conditions,a field experiment with four rates of biochar application rates:0(B0,CK),20(B20),40(B40),60(B60)t/ha and two irrigation conditions:none water irrigation(W0),winter irrigation(W1)were conducted to study the impact of biochar and irrigation on soil water content,soil temperature,bulk density,grain yield and water use efficiency(WUE)of winter wheat under wheat-maize cropping system during 2015-2017. The results showed that under dry land without irrigation,yield and WUE of winter wheat increased first and then decreased with the increase of biochar application amount. The highest yield and WUE were presented under the biochar application amount of 40 t/ha,which increased by 8.0% and 8.2%,respectively,compared with B0(CK). Under irrigation condition,wheat yield and WUE increased with the increase of biochar application amount. Yield and WUE under B40 and B60 treatments increased by 7.4% and 12.2%,8.0% and 16.3%,respectively,compared with the control group without biochar. Under the condition of no irrigation,the soil water content under B60 and B40 treatment was lower than that under other treatments when the soil water content was lower than 15%. Under irrigation,biochar application increased soil water content. The application of biochar increased soil water storage and reduced water consumption during wheat growing period.Application of biochar reduced soil bulk density,and irrigation reduced this effect compared with no irrigation. Before the regreen stage,soil temperature increased with increasing of biochar application rates under no irrigation,while irrigation reversed the effect of biochar on soil temperature. After the regreen stage,soil daily mean soil temperature(MST)between treatments under no irrigation had little difference. The MST under irrigation was higher when MST was lower,and lower when the MST was higher. The suitable amount of biochar can increase soil moisture content,increase wheat yield and water use efficiency in arid areas.

Key words: Biochar, Soil water content, Soil temperature, Winter wheat, Yield

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Cite this article

DONG Fei, YAN Qiuyan, DUAN Zengqiang, LI Feng, LU Jinxiu, YANG Feng, LI Xun, WANG Miao, JIA Yaqin. Effects of Biochar Addition on Yield and Water Use Efficiency of Winter Wheat under Different Irrigation Conditions[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(1): 149-157. doi: 10.7668/hbnxb.20190377.

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