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苦楝树系落叶大乔木,是热带极常见、用途广泛的树种。苦楝树果核极坚硬,水分难于透入,胚难以吸收,因此,自然萌发时间需一年左右,而且萌发率很低。即使出苗、生长也很弱。我们用烧种的方法,先将干种子均匀地铺放在苗床上,盖上一厘米厚的干草,从四周点火燃烧10—15分钟,将种子的一半外果皮、中果皮烧焦即可。苗床用腐植质丰富的泥土,少量沙土与农家肥混匀整平,播种后覆薄沙土,再盖一层干草,每天浇水二次、30天后,幼苗相继出齐。苗高50厘米时便可移植。移苗成活后,抹除叶芽、2米以上停止抹芽,结合施肥管理。
Neem tree deciduous trees, tropical is extremely common, widely used tree species. Neem kernels are extremely hard, difficult to penetrate the water, the embryo is difficult to absorb, therefore, the natural germination time needs about a year, and the germination rate is very low. Even if emergent, growth is weak. We use the method of burning seeds, the first dry seeds evenly spread on the seedbed, covered with a centimeter thick hay, from around the ignition combustion for 10-15 minutes, the seeds of the outer pericarp, the skin can scorch. Seedbed with humus-rich soil, a small amount of sand and peasant mix evenly, sown thin sand, and then covered with a layer of hay, watering twice a day, 30 days after the seedlings have been out Qi. When the seedling height of 50 cm can be transplanted. Miao Miao survive, remove the leaf buds, 2 m stop wiping buds, combined with fertilizer management.