木醋液对元宝枫幼苗生长发育的影响

This study aims to elucidate the effect of wood vinegar on the growth and development of Acer truncatum seedlings, to determine the optimum concentration of wood vinegar for soil application and provide reference information for the efficient cultivation of A. truncatum. A. truncatum seedlings were cultivated in a light incubator, with wood vinegar diluted by water at 200, 400, 600, or 800 times being applied to the soil. Ultrapure water was applied for the control group. Seed germination and seedling growth were carefully recorded. The results showed that when wood vinegar was diluted 800 times, it had the most significant effects on the germination rate, fresh weight of seedlings, dry weight of seedlings, total chlorophyll content in leaves, POD activity, and CAT activity, giving a relative increase of 19.0%, 46.6%, 47.7%, 9.7%, 33.8%, 51.9%, respectively. The plant height was increased by 11.1% (41.5% under the condition of 200-fold dilution of wood vinegar). The MDA content in the leaves was very similar to the control group, but the SOD vitality dropped significantly by 46.8%. This study confirms that soil application of wood vinegar promotes seed germination and seedling growth of A. truncatum. After being properly diluted the wood vinegar is beneficial to seed germination, seedling growth and stress resistance.