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断根刻芽法春末夏初,在香椿根部两侧10厘米处,用铁锹铲断部分侧根,当年即可在断根部位萌发2～4个新椿苗。这样,一年香椿株数可增2～4倍。刻芽是在枝干芽眼上方1厘米处用小钢锯划一道口子,深及木质部,该芽当年即可萌发,增加香椿头数。棚内施用CO_2气肥将98％的浓硫酸以1:3的比例加水稀释(浓硫酸徐徐加入水中,并搅拌)后,放入玻璃罐头瓶中,每亩放瓶20～30个。每亩每次放稀释
Broken root carving early spring and early summer, 10 cm on both sides of the root of Toona sinensis, with shovels shovel part of the lateral roots, that year can be rooted in the root germination of 2-4 new seedlings. In this way, the number of Tohn can increase by 2 to 4 times a year. Engraved bud is in the branches above the bud eye 1 cm above the mouth with a small steel cut, deep and xylem, the bud can germinate that year, increasing the number of Toon. Shed use of CO_2 gas fertilizer will be 98% concentrated sulfuric acid diluted 1: 3 ratio of water (concentrated sulfuric acid slowly added to the water, and stirred), into the glass cans bottles, 20 to 30 bottles per mu. Diluted per acre