甘蔗渣基质斥水性消除以改善种植适性的研究  

Study on Elimination of Water Repellency of Bagasse Substrate and its Planting Effect

作　　者：刘后伟[1] 毛敏静 洪立鹤 姚小华 孙建鑫 LIU Houwei;MAO Minjing;HONG Lihe;YAO Xiaohua;SUN Jinaxin(Guangdong Agriculture Industry Business Polytechnic,Guangzhou 510507,China;JIAYING University,Meizhou 514015,China)

机构地区：[1]广东农工商职业技术学院热带农林学院,广东广州510507 [2]嘉应学院生命科学学院,广东梅州514011

出　　处：《广东农工商职业技术学院学报》2021年第4期1-8,共8页Journal of Guangdong Agriculture Industry Business Polytechnic

基　　金：2020年广东省科技创新战略专项资金(大学生科技创新培育)(pdjh2020b1073);2019年广东普通高校重点项目(2019GWZDXM002);广东农工商职业技术学院重点项目(XYZD1607)。

摘　　要：甘蔗渣基质化固定甘蔗捕获的二氧化碳,减少了甘蔗制糖的碳排放,但甘蔗渣作为人造土壤基质存在强烈的斥水性,不利于水肥的保持和植物生根定植,研究以椰油酰胺丙基甜菜碱(CAB)为添加物,采用1.0%浓度按1:10体积比与蔗渣混合制作基质,通过发芽实验、小白菜等植物种植试验证明上述基质可以与珍珠岩、椰糠、沙、有机肥等混合组成适合植物生长的人造土壤,降低了蔗渣斥水性,改善了蔗渣基质的孔隙度、持水性等性质。CAB处理后的甘蔗渣价格低廉,来源广泛持续,没有二次污染,可以替代草炭、泥炭等传统基质广泛应用于都市农业。Bagasse matrix immobilizes carbon dioxide captured by sugarcane and reduces carbon emissions from cane sugar manufacture.However,as an artificial soil matrix,bagasse has strong water repellency,which is not conducive to maintenance of water and fertilizer,plant rooting and colonization.In this paper,cocoamidopropylbetaine(CAB)is selected as the additive to mix with bagasse at a volume ratio of 10:1 at a concentration of 1.0%,which solves the problem of water repellency of bagasse,improves the porosity and water holding capacity of bagasse matrix.The planting experiments of Chinese cabbage and other plants have proved that this substrate can be mixed with perlite,coconut bran,sand and organic fertilizer to form artificial soil suitable for plant growth.The sugarcane bagasse treated with CBA which has low price,wide source and no secondary pollution,can replace the traditional matrix like peat and be widely used in urban agriculture.

关 键 词：甘蔗渣基质 斥水性 椰油酰胺丙基甜菜碱 种植适性 低碳制糖 

分 类 号：S566.1[农业科学—作物学]