水稻秸秆还田量对土壤重金属及小麦产量的影响
投稿时间:2017-12-29    点此下载全文
引用本文:曹阳,陈新兵,沙之敏,董洋阳,袁婧,曹林奎.水稻秸秆还田量对土壤重金属及小麦产量的影响[J].《上海交通大学学报》(农业科学版),2019,(4):6-11
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作者单位E-mail
曹阳 上海交通大学 农业与生物学院,上海 200240 caoyang920706@sjtu.edu.cn 
陈新兵 上海农场,江苏 大丰 224153  
沙之敏 上海交通大学 农业与生物学院,上海 200240  
董洋阳 松江区农业技术推广中心,上海 201613  
袁婧 上海交通大学 农业与生物学院,上海 200240  
曹林奎 上海交通大学 农业与生物学院,上海 200240  
基金项目:国家重点研发计划课题(2016YFD0801106);上海市科技兴农重点攻关项目[沪农科攻字(2015)第1-4号];上海市国内科技合作项目(16295810300);上海市科技兴农推广项目[沪农科攻字(2018)第4-7号]
中文摘要:研究了上海地区不同水稻秸秆还田量:25%、50%、100%、150%及秸秆不还田对照对麦季土壤重金属含量和小麦产量的影响。2年试验结果表明,水稻秸秆还田能够显著降低土壤中铅、镉和铬的含量,与不还田处理相比平均分别下降了8.96%、11.08%和9.20%;秸秆还田能够增加小麦产量并降低土壤容重,其中100%还田处理小麦产量最高、容重最低,分别比秸秆不还田处理小麦产量提高21.3%,容重降低5.26%;150%还田处理的土壤总氮、碳含量最高,分别比秸秆不还田处理提高11.1%和5.66%。因此,全量秸秆还田可提高小麦产量、改善土壤理化性质,且不会引起小麦土壤铅、镉和铬污染的风险。研究结果为上海地区水稻秸秆科学还田及资源化利用提供了理论依据。
中文关键词:小麦  秸秆还田  土壤重金属  产量
 
Effect of rice straw returning on accumulation of heavy metals in soil and yield of wheat
Abstract:Two years’ field experiments were conducted to study on the different rice straw returning rates of 25%,50%,100%,150% and without straw returning as control on the accumulation of heavy metals in soil and the yield of wheat.Results showed comparing with control,the contents of Pb,Cd and Cr in soil under rice straw treatments decreased by 8.96%,11.08% and 9.20% respectively.The wheat yield could be improved by 21.3% while soil bulk density could be decreased by 5.26% respectively in the treatment of 100% rice straw returning compare to the control.Comparing to control,the total nitrogen and carbon were increased by 11.1% and 5.66% with the 150% rice straw returning.In conclusion,100% rice straw returning may improve wheat yield and soil properties without inducing the heavy metal risk in soil.The present study is important to improve the knowledge of the straw returning and resource utilization in Shanghai.
keywords:wheat  straw returning to field  heavy metal in soil  yied
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