Effects of Different Seed Treatment on Seedling Growth of Toxicodendron vernicifluum

The seeds of Toxicodendron vernicifluum were treated in national base of improved tree varieties for Larix gmelinii/Picea asperata in Shaba. The effects of 6 seed treatments including 98% concentrated sulfuric acid, high alkali at high temperature, high temperature treatment, mechanical treatment, T.vernicifluum seed shell sand storage, and no dewaxing treatment on the seedling, seedling growth and quality of T.vernicifluum were studied. The results showed: The seeds of T.vernicifluum after different treatments have different seedling stages. Moreover, there were significant differences in seedling emergence rate, ground diameter, seedling height, and ground diameter/seedling height ratio. After sowing seeds treated with 98% concentrated sulfuric acid for 9 d, seedling began to emerge, and about 23 d seedling ended, the seedling emergence rate was 74.99%. Secondly, T.vernicifluum seeds treated with high temperature and more than 3% edible alkali solution started to sprout after being sown for 11 d, and the seedling period was 25 d, with an emergence rate of 71.56%. Seeds with exocarp or without dewaxing continued to emerge sporadically until year 2, with emergence rates of 12.92% and 13.29%.The seedling diameter and seedling height of lacquer tree seeds seeded with 98% concentrated sulfuric acid were the largest, while the seedling diameter and seedling height of T.vernicifluum seeds were treated with high temperature +3% edible alkali solution. The ground diameter and seedling height of the 2 seeds treated were respectively: (5.52 ± 0.73) mm, (62.99 ± 7.71) cm and (5.48 ± 0.308) mm, (59.93 ± 4.02) cm. The seeds treated with 98% concentrated sulfuric acid and high temperature +3% edible alkali solution showed positive and excessive distribution of ground diameter and high frequency. In the production of sumac seedling seed > 85 ℃ water dewaxing used +3% edible alkali treatment, also can achieve the same effect as using 98% sulfuric acid, easy access to market, and does not pollute the environment.