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[1]ZHENG Ziqiao,ZHU Jinglun.Effect of Biochar on Soil and Microbial Characteristics in Root Zone of Wheat[J].Research of Soil and Water Conservation,2019,26(03):35-41.

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Effect of Biochar on Soil and Microbial Characteristics in Root Zone of Wheat

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 35-41 Column: Public date: 2019-04-12

Title:: Effect of Biochar on Soil and Microbial Characteristics in Root Zone of Wheat

Author(s):: ZHENG Ziqiao¹, ZHU Jinglun²; 1. Yantai Institute, China Agricultural University, Yantai, Shandong 264670, China;
2. Architectural Design and Research Institute, Tongji University, Shanghai 200092, China

Keywords:: biochar; wheat; soil characteristics; microbial characteristics; root zone

CLC:: S154;S606

DOI:: -

Abstract:: We used the controlling fields experiment of cultivation technique to study the responses of soil and microbial characteristics of wheat in root zone to different biomass charcoal addition levels (CK 0 t/hm², LB 10 t/hm², MB 20 t/hm², HB 40 t/hm²) by five years. The results showed that:(1) soil pH, bulk density in root zone gradually decreased with the increase of biochar concentration and were significantly lower than CK (p<0.05); (2) soil nutrients in root zone and plant nutrients first increased and then decreased with the increase of biochar concentration and were significantly higher than CK (p<0.05), while soil total phosphorus had no significance (p>0.05); (3) bacteria amounts were predominant (more than 99.3%), actinomyces amounts were the next, and fungi amounts were the least among composition of three communities of soil microbes in root zone; soil bacteria and actinomycetes amounts first increased and then decreased with the increase of biochar concentration and were significantly higher than CK (p<0.05), while biochar addition decreased soil fungi amounts, in total, biochar addition significantly increased the total number of microorganisms (p<0.05); (4) soil microbial biomass carbon, microbial biomass nitrogen, microbial respiration, microbial metabolic entropy and microbial activity first increased and then decreased with the increase of biochar concentration and were significantly higher than CK (p<0.05); (5) all in all, a certain range of biochar addition could improve the soil and microbial characteristics and fertility in root zone of wheat, but that was closely related to soil type, soil fertility, plant type or other ecological environment.

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