施用生物有机肥对可可苗期生长及土壤酶活性的影响

摘要

通过温室盆栽试验研究施用不同生物有机肥对可可苗期生长及土壤酶活性的影响.结果表明:施用生物有机肥BIOa和BIOb的处理可可植株干重,总根长、根系直径、根系表面积和根系总体积显著高于对照(单施化肥)及施用牛粪的处理；施用生物有机肥BIOa的处理可可叶片净光合速率、蒸腾速率和叶绿素含量与对照相比分别增加了169％、270％和28％；施用BIOa的处理土壤酸性磷酸酶、脲酶和蔗糖酶活性与对照相比显著提高了98.7％、92.2％和83.2％.综上所述,施用生物有机肥BIO可显著促进可可地上部植株和根系生长,同时也可显著提高相关土壤酶活性.%Green house pot experiments were carried out to investigate the effects of different bio-organic fertilizer application on cacao(Theobroma cacao.L)seedlings growth and soil enzyme activities.The main results obtained were listed as follows:application of bio-organic fertilizer could obviously increase cacao plant dry weights,total root length,root diameter,root surface area and root volume compared with the control and cattle manure treatments; application of bio-organic fertilizer BIOa significantly increased net photosynthetic,transpiration rate and Chlorophy by169％,270％ and 28％,respectively compared with the control; application of bio-organic fertilizer BIOa obviously increased soil acidic phosphatase,urease and invertase activities by 98.7％,92.2％ and 83.2％,respectively compared with the control.In conclusion,the application of bio-organic fertilizer can effectively promote cacao above-ground and root growth,moreover,significantly increase soil enzyme activities.