不同育苗基质对工业大麻幼苗生长的影响OA

To screen the optimal substrate formula for industrial hemp seedling cultivation,different proportion substrates(T1-T4)were prepared using peat soil,vermiculite,perlite,and coconut coir,with commercial substrate(CK1)and field soil(CK2)as controls.The study investigated the physico-chemical properties of different substrates and their effects on seedling emergence rate,growth,and phys-iological indicators.A comprehensive evaluation was conducted on the effects of different substrate formu-las on industrial hemp seedlings.The results showed that:T4 treatment(peat soil∶vermiculite∶perlite∶coconut coir=4∶3∶2∶1)had the highest emergence rate,with plant height,main root length,leaf ar-ea and fresh/dry weight all significantly higher than CK1 and CK2;moreover,T4 also exhibited the highest total chlorophyll content,SOD activity,and POD activity.Additionally,the PRO content of T1-T4 was significantly higher than CK2,while the MDA content was significantly lower than both CK1 and CK2.Principal component analysis shows that peat soil content is the most important factor to determine the quality of matrix.