Format

Send to

Choose Destination
Ying Yong Sheng Tai Xue Bao. 2019 Apr;30(4):1359-1366. doi: 10.13287/j.1001-9332.201904.036.

[Effects of biochar on soil nutrition and microbial community diversity under continuous cultivated cucumber soils in greenhouse].

[Article in Chinese; Abstract available in Chinese from the publisher]

Author information

1
College of Horticulture, Hebei Normal University of Science & Technology, Changli 066600, Hebei, China.
2
College of Agronomy and Biotechnology, Hebei Normal University of Science & Technology, Changli 066600, Hebei, China.

Abstract

in English, Chinese

In this study, we examined the effects of biochar addition on the soil nutrition and microbial community diversity in continuous cultivated cucumber soils, using 95% soils of planting cucumbers for 6 and 10 years mixed with 5% biochar as treatment and no biochar addition as control, all plants cultivated in the pots. The results showed that adding biochar increased per plant yield of cucumber by 11.4% and 62.8% compared with continuous cropping soil of 6 years and 10 years, respectively. Biochar addition significantly decreased two continuous cropping soils bulk density, increased the content of soil organic matter, available P content, cation exchange capacity (CEC) and soil pH. Meanwhile, biochar addition remarkably improved the abundance of bacteria, ratio of bacteria/fungi, but reduced the abundance of fungi and fusarium oxysporum, which made fungal type soil turn to bacterial type soil. For 10 years continuous cropping soils of adding biochar, the abundance of soil bacteria and bacteria/fungi ratio were 2.00 and 3.64 times to that in the control, respectively, and the abundance of fungi and fusarium oxysporum were decreased by 54.8% and 55.9%, respectively. Biochar addition significantly enhanced soil microbial activities, soil microbial Shannon and McIntosh indexes of 10 years soil by 1.50, 2.14 and 1.31 times, respectively. For continuous cropping soil of 10 years, biochar addition significantly increased microbial utilization abilities of carbohydrate, amino acid, phenolic acid and amine by 1.62, 1.81, 1.74 and 1.93 times, respectively. There were remarkable influences of soil bulk density, available P content, CEC, and pH value to changes of soil microbial community. In conclusion, biochar addition optimized the riphzosphere environment, increased cucumber yield, and alleviated continuous cropping obstacles by improving soil physical and chemical properties, as well as soil microbial community.

KEYWORDS:

Biolog method; biochar; continuous cropping soil; microbial diversity; nutrition

PMID:
30994299
DOI:
10.13287/j.1001-9332.201904.036
[Indexed for MEDLINE]

Supplemental Content

Loading ...
Support Center