Application and Promotion Strategy of New Technology of Nanmu Seedling Raising
To analyze the influence of different seedling substrates on container seedling,and to apply and popularize the new seedling raising technology in combination with the current situation of seedling raising,aiming at promoting the growth of nanmu seedling.This study was carried out in the nanmu planting base of Shaxi Township,Mingxi County,Fujian Province.According to the different treat-ment of different seedling cultivation substrates,namely Z1,Z2,Z3 and Z4,the influence of different seedling cultivation substrates on the seedling cultivation effect was systematically studied,so as to determine the optimal composition ratio of seedling cultivation sub-strate.The results showed that the average seedling height,average ground diameter,taproot length and biomass of Z1 treatment were better than those of other treatments.Z1 treatment had the largest leaf area,the highest chlorophyll index and the lowest proline index,which was helpful to improve the growth resistance of Nanmu seedlings.The relative water content and porosity of Z1 treatment were higher than those of other treatments,and the order was Z1>Z2>Z3>Z4.The physical and chemical properties of the understory soil under Z1 treatment were better,and both the porosity and water content reached the ideal state.It can be seen that the seedling substrate with the mixed formula of xanthoxene soil,peat soil,perlite and vermiculite 3∶2∶2∶2 treated by Z1 can promote the growth of nanmu seedlings and is conducive to the improvement of stress resistance.Therefore,it is suggested to apply Xanthoxene soil,peat soil,perlite and vermiculite 3∶2∶2∶2 seedling substrate in nanmu growth to improve the quality of nanmu container seed-lings and promote the growth of nanmu seedlings.