Developing More Effective Enhanced Biochar Fertilisers for Improvement of Pepper Yield and Quality  

作　　者：YAO Chunxue Stephen JOSEPH LI Lianqing PAN Genxing Yun LIN Paul MUNROE Ben PACE Sarasadat TAHERYMOOSAVI Lukas VAN ZWIETEN Torsten THOMAS Shaun NIELSEN Jun YE Scott DONNE 

机构地区：[1]Institute of Resources,Ecosystem and Environment of Agriculture Nanjing Agricultural University [2]Discipline of Chemistry,University of Newcastle [3]School of Materials Science and Engineering,University of New South Wales [4]New South Wales Department of Primary Industries [5]School of Biotechnology and Biomolecular Sciences & Centre for Marine Bio-Innovation,University of New South Wales

出　　处：《Pedosphere》2015年第5期703-712,共10页土壤圈（英文版）

基　　金：financially supported by the Ministry of Science and Technology of China (Nos.2013GB23600666 and 2013BAD11B00);funded by the Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,China;supported by the grant of the Australian Research Council (No.LP120200418);Renewed Carbon Pty Ltd.,Australia and the project of DAFF Carbon Farming Futures-Filling the Research Gap,Australia (No.RG134978)

摘　　要：Utilization of biochar at high application rates can increase soil C and crop yields, decrease greenhouse gas emissions and reduce nutrient run-off from soils. However, the high application rate of 10 t ha-1 may not return a profit to the farmer due to the high cost of biochar. In this study biochar was modified through pre-treating the biomass and post-treating with phosphoric acid, minerals and different chemical fertilisers to study the effects of two new enhanced biochar fertilisers on the yield and quality of green pepper in a field experiment with 5 fertilisation treatments and 3 replications. The two new biochar fertilisers significantly （P 〈 0.05） increased the yield of green pepper （11.33-11.47 t ha-l）, compared with the conventional chemical fertiliser （9.72 t ha-l）. The biochar fertiliser treatments improved the vitamin C content of green pepper from 236.99 to 278.28 mg kg-1, and also significantly （P 〈 0.05） reduced the nitrate content from 132.32 to 101.92 mg kg-1, compared with chemical fertiliser. This study indicated that, compared to the use of conventional chemical fertiliser, all of the biochar fertiliser treatments could significantly improve the yield and quality of green pepper.Utilization of biochar at high application rates can increase soil C and crop yields, decrease greenhouse gas emissions and reduce nutrient run-off from soils. However, the high application rate of 10 t ha-1may not return a profit to the farmer due to the high cost of biochar. In this study biochar was modified through pre-treating the biomass and post-treating with phosphoric acid, minerals and different chemical fertilisers to study the effects of two new enhanced biochar fertilisers on the yield and quality of green pepper in a field experiment with 5 fertilisation treatments and 3 replications. The two new biochar fertilisers significantly(P < 0.05) increased the yield of green pepper(11.33–11.47 t ha-1), compared with the conventional chemical fertiliser(9.72 t ha-1). The biochar fertiliser treatments improved the vitamin C content of green pepper from 236.99 to 278.28 mg kg-1, and also significantly(P < 0.05) reduced the nitrate content from 132.32 to 101.92 mg kg-1, compared with chemical fertiliser. This study indicated that, compared to the use of conventional chemical fertiliser, all of the biochar fertiliser treatments could significantly improve the yield and quality of green pepper.

关 键 词：bentonite clay chemical fertiliser nitrate content phosphoric acid vitamin C content wheat straw 

分 类 号：S641.3[农业科学—蔬菜学]