Effect of Different Seedling Substrate on the Growth of Larix gmelinii Seedlings
[Objective]The specific performance of Larix gmelinii seedlings growing in different substrates was analyzed,so as to determine the appropriate culture substrate to promote the growth of larch seedlings.[Method]Larix gmelinii in Xifeng county,Liaoning province was selected as the main research object,the control group was 100%raw soil(CK),and the experimental group was set up with four treatments(T1,T2,T3,T4).Each treatment was composed of different proportions of raw soil,vermiculite,sand,edible fungus residue and humus.The effects of different medium quality on the growth of Larix gmelinii seedlings were analyzed.[Result]Compared with CK,the seed germination rate of T1,T2,T3 and T4 was higher,in the order of T2、T3、T1、T4,and the germination rate of T2 seed was increased by 22.51%compared with the control group.Larix gmelinii seedling height,ground diameter,taproot length and lateral root number in experimental group were higher than those in control group,and T2 treatment was the highest.Compared with the control group,the biomass per plant of T1,T2,T3 and T4 seedlings was higher.The physical and chemical properties of soil of T1,T2,T3 and T4 were better than those of control group.[Conclusion]The growth effect of Larix gmelinii seedlings under 40%original soil +15%humus +5%vermiculite +15%sandy soil +25%edible fungus residue is the best.
万方数据
维普
