Journal of Northern Agriculture ›› 2021, Vol. 49 ›› Issue (3): 57-63.doi: 10.12190/j.issn.2096-1197.2021.03.08

• Soil and fertilizer·Agroecology environment • Previous Articles     Next Articles

The effect of fig leaves biochar on wheat seed germination and seedling growth

ZHU Haiyun1, ZHANG Baohua2   

  1. 1. College of Energy and Chemical Engineering,Ningxia Vocational Technical College of Industry and Commerce,Yinchuan 750021,China;
    2. New Pesticide Innovation and Research Institute,Qingdao Agricultural University,Qingdao 266109,China
  • Received:2021-04-23 Online:2021-06-20 Published:2021-08-23

Abstract: 【Objective】 To study the effect of fig leaves biochar on wheat seed germination and seedling growth.【Methods】 Using fig leaves as the experimental material,biochar was prepared by burning at 400,500,and 600 ℃ for 6 h,and the morphology structure of biochar was observed by scanning electron microscope. The biochar extracts of fig leaves with concentrations of 2,6,10,20 g/L were prepared,and the effects of different concentrations of fig leaves biochar extracts on wheat seed germination and seedling growth were analyzed.【Results】 High-temperature carbonization treatment of fig leaves biochar could increase its porosity,but its yield decreased as the temperature increasing,while the pH value and ash content increased. The highest yield was 36.21% when the carbonization temperature 400 ℃. With the increase of preparation temperature and use concentration,the wheat seed germination rate decreased. When the concentration of biochar at 600 ℃ was 20 g/L,the germination rate only 55%;low concentration promoted and high concentration inhibited for the growth of wheat sprouts and roots;root-shoot ratio decreased with the increase of biochar concentration. The three types of biochar had a promoting effect on SOD activity of wheat seedling. As the biochar concentration increases,the SOD activity first increased and then decreased. When the concentration of biochar prepared at 600 ℃ was 10 g/L,the highest SOD activity could reach 260 U/mg. The effect of biochar prepared at 500 ℃ and 600 ℃ on POD activity of wheat seedling showed a trend from high to low. When the amount of biochar prepared at 500 ℃ was 2 g/L,the highest POD activity reached 207.6 U/mg.【Conclusion】 The carbonization temperature and use concentration of fig leaves biochar effected the seed germination rate and seedling growth of wheat,and biochar with high carbonization temperature had a significant effect on wheat seed germination and seedling growth. When the concentration was 2-10 g/L,it could promote wheat growth;when the concentration was 20 g/L,it could degrade wheat growth.

Key words: Fig leaves, Biochar, Carbonization temperature, Wheat, Seed germination, Seedling growth

CLC Number: 

  • S663.3