Biochar: Effects on Soil Chemical Properties and Cucumber Yield and Quality in Greenhouse

doi:10.11923/j.issn.2095-4050.cjas18060017

Abstract

Abstract: The paper aims to explore the improvement effect of biochar on greenhouse soil. A field-testing was conducted with different application rates of biochar in 2014 and 2015 to explore the potential for improving soil chemical properties in greenhouse environment. The results showed that: there were remarkable differences of the contents of available potassium (AK) and nitrate nitrogen (NO3--N) under different biochar application rates. The AK increased by 60- 152 mg/kg. The decreasing trend of AP was slowed down by 14.57%-18.42% due to the application of biochar. The organic carbon content was 1.76-2.59 times higher than that of CK. The pH value increased by 0-0.02 units, while the electrical conductivity of topsoil decreased with the elevated biochar. Vitamin C and soluble sugar content in fruit increased respectively by 5.64%- 13.26% and 17.21%-40.73%, nitrate content decreased by 0.94%-8.34%. The application of biochar in the season significantly improved the nutrients’content in soil and the yield and quality of cucumber, and the effect of promoting is weakened after one year.

CLC Number:

S318

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