为筛选出适宜芹菜育苗的基质配比,降低化肥过量施用造成的资源浪费和环境污染,提高肥料利用率,加快优质无公害蔬菜的集约化、规模化生产,本试验结合甘肃地区气候条件,探究了 5种不同用量的玉米秸秆生物碳对芹菜幼苗生长及基质理化性状的影响试验.结果表明,T3处理(玉米秸秆:草炭:珍珠岩=8:82:10)的芹菜幼苗株高、茎粗、单株干质量、壮苗指数等生长指标均显著高于对照和其他处理;基质总孔隙度为73.05%,水气比高于其他处理,这表明添加适量的玉米秸秆生物炭对芹菜幼苗的生长具有促进作用,进而为当地芹菜高效优质育苗提供参考.
In order to reduce the waste of resources and environmental pollution caused by excessive application of chemical fertilizers,improve the efficiency of fertilizer utilization,screen out suitable substrate ratios for local celery seedlings,in this experiment,the effects of five different dosages of corn stover biochar on the growth of celery seedlings and the physicochemical properties of the substrate were tested in accordance with the local climatic conditions.The results showed that the plant height,stem thickness,dry weight per plant,and seedling index of celery planted with T3(corn stover:charcoal:perlite=8:82:10)were significantly higher than those of the control and other treatments.The total porosity of T3 was 73.05%,and the water-air ratio was higher than that of the other treatments,which indicated that the addition of an appropriate amount of corn stover biochar had a promoting effect on the growth of celery seedlings,and thus provided a theoretical basis for local celery efficient and high quality seedling nursery to provide reference.