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钝叶黄檀(Dalbergia obtusifolia Prain)又叫牛肋巴,属蝶形花科黄檀属。由于用它放养的紫胶虫产胶稳定,胶质好,已被广泛用作紫胶虫的寄主。钝叶黄檀一般均用2年生苗木上山定植,其直根性很强,仅一条主根,状似胡萝卜,极少有侧根,因此,影响了定植后的生长。为改变钝叶黄檀苗木的直根性,促进苗木生长,我们对1年生苗采取了翻床措施,取得一定的效果。一、材料与方法种子采自云南省沧源县20年生母树上,当年3月播种,苗圃进行常规管理。翌年4月翻床,翻床方法是将1年生苗挖起,从地上部分5厘米处截去茎叶,在地下部分5厘米处截去根部,然后重新种植在苗床上,第三年6月起苗定植。并设对照。
Dalbergia obtusifolia Pore (Dalbergia obtusifolia Prain), also known as Niu Leba, is a butterfly flower Dalbergia. Because it is stocked with shellac production gelatin stable, good glial, has been widely used as a host of lac insect. False leaf Dalbergia are generally 2-year-old seedlings uphill planting, its straight root strong, only a main root, like a carrot, very few lateral roots, thus affecting the growth after planting. In order to change the root pruning of sandalwood sandalwood seedlings, and to promote the growth of seedlings, we adopted the method of turning the bed for 1-year-old seedlings and achieved some results. I. Materials and Methods Seeds were collected from 20-year-old mother trees in Cangyuan County, Yunnan Province. In March of that year, seeds were planted and nurseries were routinely managed. Turn the bed the following year in April, turning the bed method is to dig up one-year-old seedlings, stems and leaves cut from 5 cm above the ground, cut roots in the underground part of 5 cm, and then re-planted in seedbed, the third year in June Seedling planting. And set the contrast.