菌渣在烟草育苗中的应用效果分析

本文以废弃菌渣为基础基质,配以草炭和蚯蚓粪等,探索适合烟草育苗的基质配方,并分析菌渣在烟草育苗中的应用效果。结果表明T4处理组（蚯蚓粪∶菌渣∶蛭石∶珍珠岩=1∶1∶1∶1）在株高、根系发育等表观生长指标和可溶性糖、根系活力等生理活性指标方面相较于市售基质处理组（草炭∶蛭石∶珍珠岩=2∶1∶1）均有明显的优势。通过SPSS软件对基质物理、化学性状和烟草生长生理指标进行多元线性回归分析,结果表明,基质较高的总孔隙度、有效铁含量和全钾含量能有利于烟草幼苗的生长,而较高的电导率、有机碳含量和全氮含量则不利于烟草幼苗的生长。菌渣具有高总孔隙度、高有效铁、适宜营养结构和低成本的优势,但也有高电导率、低容重和高有机碳的劣势,不宜单独作为基质,应用适当配方,可充分发挥菌渣的作用,是一种好的基质材料,具有广阔的基质化应用前景。

Application Effect Analysis of Spent Mushroom Substrate in the Seedling of Tobacco

The suitable substrate formulation for tobacco seedling cultivation was explored based on spent mushroom substrate (SMS), peat and wormcast, and the application effect of SMS in tobacco seedling cultivation was analyzed. The results showed that T4 treatment group (wormcast∶SMS∶vermiculite∶perlite = 1∶1∶1∶1) had obvious advantages in plant height, root development, soluble sugar, root activity and other growth and physiological indicators compared with market substrate treatment group (peat∶vermiculite∶perlite=2∶1∶1). Multivariate linear regression analysis of physical and chemical indexes of substrate and growth and physiological indexes of tobacco was carried out by SPSS software. The results showed that higher total porosity, available iron content and total potassium content of substrate were beneficial to the growth of tobacco seedlings, while higher electrical conductivity, organic carbon and total nitrogen content were not conducive to the growth of tobacco seedlings. SMS had the advantages of high total porosity, high effective iron, suitable nutrient structure and low cost, but it also had the disadvantages of high conductivity, low bulk density and high organic carbon. It was not suitable to be used as a matrix alone. The proper formulation could give full play to the role of SMS. It is a good substrate material and has broad application prospects.