摘要
[目的]探讨椰糠替代草炭作为生菜栽培基质的可能性。[方法]以椰糠、草炭为试验材料按照不同体积比配制混配基质,并以草炭和蛭石比例1∶1(体积比)作为对照(CK),研究混配基质的物理、化学性状和发芽指数,探讨混配基质对生菜生长的影响。[结果]混配基质中随着椰糠含量增加,容重、总孔隙度、持水能力及水气比下降,通气孔隙度逐渐上升,氮磷钾含量总体呈下降趋势,pH和EC值逐渐增大;处理T 2的混配基质中钾含量及地上部和全株干鲜重明显高于其他处理,发芽指数大,叶绿素a和叶绿素总量含量高。[结论]处理T 2(草炭:椰糠=4∶2,体积比)混配基质可作为生菜栽培的替代基质。
[Objective]To study the possibility of coir dust instead of peat as a cultivation substrate for lettuce.[Method]The mixed substrate was prepared according to different volume ratios of coir dust and peat,and the ratio of peat and vermiculite was 1∶1(volume ratio)as control CK.The physical,chemical properties and germination index of mixed substrates,and the effects of mixed substrates on the growth of lettuce were studied.[Result]With the increasing of coir dust in the mixed substrate,the bulk density,total porosity,water holding capacity and water-gas ratio were decreased,the aeration porosity was increased gradually,and the content of nitrogen,phosphorus,potassium were decreased,pH value and the EC value were increased gradually.The potassium content in the mixed substrate,the quality of the shoot and whole plant dry weight of treatment T 2 were significantly higher than other treatments,the germination index,the total content of chlorophyll a and chlorophyll of treatment T 2 were higher than other treatments.[Conclusion]The mixed substrate of T 2(Peat∶Coir dust=4∶2,volume ratio)can be used as an alternative substrate for lettuce cultivation.
作者
汤柔颖
邱志豪
韩莹琰
郝敬虹
刘超杰
范双喜
TANG Rou-ying;QIU Zhi-hao;HAN Ying-yan(Beijing Key Laboratory of New Technology in Agricultural Application,National Demonstration Center for Experimental Plant Production Education,Beijing University of Agriculture,Beijing 102206)
出处
《安徽农业科学》
CAS
2019年第21期45-47,95,共4页
Journal of Anhui Agricultural Sciences
基金
国家重点研发计划项目(2016YFD0201010)
叶类蔬菜产业技术体系北京市创新团队(BAIC07-2019)
北京农学院蔬菜产业技术提升协同创新中心资助项目(XT201801)
关键词
椰糠
草炭
蛭石
生菜
混配基质
Coir
Peat
Vermiculite
Lettuce
Mixed substrate
