棉秆生物质炭对两种石灰性土壤速效磷、速效钾的激活效应研究  

Study on Activating Effect of Soil Available P and K through Application of Cotton Stalk Biochar

作　　者：马彦茹[1] 杨新华[1] 葛春辉[1] 孙九胜[1] 

机构地区：[1]新疆农业科学院土壤肥料与农业节水研究所,乌鲁木齐830091

出　　处：《新疆农业科学》2014年第4期660-666,共7页Xinjiang Agricultural Sciences

基　　金：新疆农科院优秀青年基金(xjnky-2012-024);国家自然基金项目(31260501);"十一五"国家科技支撑计划(2009BADA4B03)

摘　　要：[目的]研究棉秆生物质炭对灰漠土、风沙灌淤土速效磷、钾的影响.[方法]采用室内培养试验,分别以两种土壤为研究对象,设置四个处理,分别为空白土壤（CK）、土壤质量0.5％的棉秆炭（0.5％BC）、土壤质量1.0％的棉秆炭（1.0％ BC）、土壤质量2.0％的棉秆炭（2.0％ BC）;检测不同培育时间,两种土壤的pH、速效磷、速效钾、阳离子交换量（CEC）的变化.[结果]棉秆炭（BC）呈现碱性,随着添加量的增加,不同程度的提高两种土壤pH、速效磷、速效钾、阳离子交换量.其中棉秆炭高剂量（2％）处理能明显提高两种土壤速效磷、速效钾（P＜0.05）,增加幅度分别为25.21％ ～45.79％、10.24％ ～ 28.05％、23.34％ ～ 101.17％、38.95％ ～62.36％.[结论]棉杆炭具有激活两种土壤速效磷、速效钾的效应,对土壤保肥能力有一定的影响.[Objective] The study focuses on the effect of cotton stem biochar （BC） applied on changing available P and K in grey desert soil and sand irrigated soil.[Method] Two types of soil were taken as trial materials,and four treatments were set,which were 0% biochar （CK）,and 0.5% biochar,1.0% biochar and 2.0% biochar,respectively.Indoor incubation experiment was conducted to investigate pH value,and available P,and K,and cation exchange capacity （CEC）.[Result] PH value,CEC,available P and K was increased by dosage of BC applied in soil; High dosage of BC （2%） applied would lead to soil available P,and K improvement in short term （P 〈0.05）.The inceasing rates were 25.21%-45.79%.10.24-28.05%.23.34%-101.17% and 38.95%-62.36%,respectively.[Conclusion] It was inferred that soil available P and K could be activated through application of cotton stalk biochar,and the applied biochar could improve soil fertility to a certain extent.

关 键 词：棉秆生物质炭 石灰性土壤 激活效应 

分 类 号：S14[农业科学—肥料学]