玄武岩砖红壤磷肥活化效果及其机理研究

《玄武岩砖红壤磷肥活化效果及其机理研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、Vol.10No.4李淑仪等:玄武岩砖红壤磷肥活化效果及其机理研究315文章编号：1008-181X（2001）04-0311-05玄武岩砖红壤磷肥活化效果及其机理研究李淑仪，蓝佩玲，廖新荣，徐胜光，钟继洪（广东省生态环境与土壤研究所，广东广州510650）摘要：应用不同活化剂处理不同性质的磷肥，并对其在玄武岩砖红壤中的生物效应及作用机理进行了研究。结果显示：在玄武岩砖红壤上，活化剂处理磷肥均能显著提高蔬菜生物量，其中对磷矿粉无机活化剂处理后的生物效应最大；对磷铵则是有机2号活化剂的生物效应最大。玄武岩砖红壤

2、中的铁、锰与磷素有效性关系密切，且在还原条件下的土壤锰对磷的固定作用更大；硅可促进土壤中磷的释放；供试活化剂不仅可促进难溶磷的释放，还可控释水溶性磷，使土壤供磷性能平稳。在体系中，活化剂对磷的促释和控释机理在于通过对土壤铁、锰、铝含量的调节而实现对磷的活化。关键词：玄武岩砖红壤；磷；活化剂；生物效应；活化机理中图分类号：S143.2文献标识码：AStudyonactivatingeffectsandmechanismsofphosphaticmanureinlatololderivedfrombasaltLI

3、Shu-yi,LANPei-ling,LIAOXin-rong,XUSheng-uang,LIANGXiong-cai（GuangdongInstituteofEco-environmentalandSoilSciences,Guangzhou510650,China）Abstract:Severalactivationmatterswereappliedfortookorderwithphosphaticmanureofdissimilaritycharacter.Whenactivationphospha

4、ticmanureswereemploiedonbasalt-latolol,thebiologyresponsesandactionmechanismwerestudied.Theresultsindicated:thatthevegetablebiomasswereincreasedmarkedlyonbasalt-latolol,whenpottedplantweretestedbyafewactivationmattersforexaminationdealtwithphosphaticmanure.

5、Afterthephosphoruspowderbydealtwithactivationmattersthereinabio-activationmatterswereemploiedthevegetablebiomassweremost.ButphosphateammoniumbydealtwithorganicmattersNo.2werethevegetablebiomassweremost.Therelativitybetweenironandmanganeseinbasalt-latololwit

6、hphosphorusweremarkedness.Underconditionofdeoxidizationthefixationeffectsofmanganeseinsoiltophosphorusweremorefierce,thesiliconfavoredthatthesoilreleasedphosphorus.Theactivationmattersoftestnotonlycouldacceleratehard-dissolvingphosphorustosetfreebutcouldcon

7、trolliquidphosphorustosetfree,thatbenefitedtotheplacidityforthecapabilityofsupplyphosphorusinthesoil.Inthesystemofsoil-plant，themechanismsofacceleratereleaseandcontrolreleaseforactivationmatterstophosphoruswereadjustedtheconcentrationofironandmanganeseandal

8、uminiumtoactivatephosphorusinthesoil.Keywords:basalt-latolol;phosphorus;activationmatters;biologicalresponse;activatingmechanismsVol.10No.4李淑仪等:玄武岩砖红壤磷肥活化效果及其机理研究315　我国土壤有78%的土壤缺磷，且南方土壤淋溶强烈，土壤铁、铝、锰含量高，