沈阳农业大学学报2017，Vol.48Issue(4)：445-450,6.DOI:10.3969/j.issn.1000-1700.2017.04.009
生物炭对红壤中不同铝形态及小白菜生长的影响
Effect of Biochar Application on Remission of Red Soil Aluminum Different Forms and the Growth of Pakchoi
摘要
Abstract
Red soil is as a typical acid soil with low pH, high content of active aluminum and so on. Biochar is known as a new soil conditioner which has obvious effect on improving soil fertility and pH, even remitting aluminum toxicity. In order to study the effect on aluminum toxicity reduction in red soil and growth of pakchoi under biochar addition, this experiment set 0％C (CK), 1％ C, 2％ C, 3％ C treatments in pot with 4 repeats. The results showed that application of biochar could significantly increase the emergence rate of pakchoi. The treatments of 1％C, 2％C and 3％C increased emergence rates by 10.8％-25.0％respectively than CK treatment. The growth of pakchoi improved significantly and enhanced the biomass of pakchoi after biochar applying. Meanwhile, the aluminum contents of the pakchoi reduced by 68.3％-82.2％ than CK treatment after biochar applying. The soil pH, available K, available P and organic carbon content increased significantly under biochar applying. The content of soil available N decreased significantly under biochar applying. The soil total active aluminum content decreased significantly by 16.9％-41.7％ respectively under biochar applying. The exchangeable Al3+ reduced by 37.4％-75.5％. Although total soil active aluminum decreased significantly after biochar applying, not all of the aluminum forms decreased, which they exist transformation relationship among these aluminum forms. The exchangeable Al3+ and Al-HA decreased, meanwhile the Al (OH)2+, Al (OH)2+ and colloid Al (OH)30 increased in different degrees. The results showed that the application of biochar could improve soil fertility, increase the pH, make the exchangeable Al3+ with biological toxicity changing in other Al forms, which leads to remit th e aluminum toxicity.关键词
生物炭/红壤/铝毒/活性铝/小白菜Key words
biochar/red soil/aluminum toxicity/active aluminum/pakchoi分类
农业科技引用本文复制引用
林庆毅,应介官,张梦阳,彭抒昂,姜存仓..生物炭对红壤中不同铝形态及小白菜生长的影响[J].沈阳农业大学学报,2017,48(4):445-450,6.基金项目
公益性行业(农业)科研专项项目(201303095) （农业）
