The Effect of Bamboo Charcoal Application on Soil Nutrients and Heavy Metals in Rice
作者机构：State Key Laboratory of Subtropical SilvicultureZhejiang A&F UniversityHangzhou311300China Jiaxing Vocational&Technical CollegeJiaxing314036China Agriculture and Forestry Technology Extension CenterHangzhou311300China
出 版 物：《Phyton-International Journal of Experimental Botany》 (国际实验植物学杂志（英文）)
年 卷 期：2022年第91卷第6期
页 面：1245-1256页
核心收录：
学科分类：0710[理学-生物学] 02[经济学] 0202[经济学-应用经济学]
基 金：the Key Research and Development Plan of Zhejiang Province(No.2019C02008-03).
主 题：Bamboo charcoal rice heavy metal pollution paddy field HCl-extractable heavy metal
摘 要：Soil heavy metal pollution is becoming more and more serious.Biomass charcoal application can play an important role in alleviating the toxicity of heavy metals in soils.Compared with other biochar,bamboo charcoal has more unique properties and may have a unique effect on heavy metal pollution.Zhejiang Province of Southeastern China is rich in bamboo resources.However,few studies related to bamboo charcoal application for heavy metal remediation in farmland were reported.In this study,four treatments with different amounts of bamboo charcoal application were set up through a field experiment,namely BC0(no bamboo charcoal application),BC1(2500 kg⋅ha^(−1)),BC2(5000 kg⋅ha^(−1)),and BC3(10000 kg⋅ha^(−1)),and each treatment was replicated three times.The results showed that(1)The application of bamboo charcoal significantly increased the soil pH and organic matter content.Compared with BC0,the pH and organic content of BC3 increased by 7.4%and 17.4%(P0.05).(3)With the increase of bamboo charcoal application,the Cd content in rice gradually decreased,the BC3 treatment significantly decreased by 39.0%(P0.05),compared with BC0.(4)Soil pH,organic matter and Cd in rice seeds were significantly negatively correlated(P0.01).The heavy metal content in rice does not change with the change of heavy metal content with HCl-extractable state in soil.It means bamboo charcoal does not reduce heavy metal content in rice by simply declining the heavy metal content with HCl-extractable state.The mechanism of action is relatively complicated,and further study is needed.
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