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开原县上肥公社苗圃培育长白落叶松苗木时,采取了播种苗断根、百日苗移植和秋季移植等三项措施,提高了苗木质量,降低了育苗成本,提高了经济效益。播种苗断根.在7月中下旬,用四齿杈子把幼苗撅起断根,待根断后把苗木放回原位,然后再将幼苗顺同一方向压倒把土踩实,最后浇透水。断根后成活率99％,比不断根苗木高1～1.6厘米、地径粗0.04～0.07厘米,侧根总长比不断根的要长9.19厘米。断根苗移植成活率提高5％,每亩苗木可增收10余元。
Kaiyuan County, on the nursery to cultivate Larix principis-rupprechtii nursery seedlings, taken sowing seedlings cut off, 100-day seedling transplantation and autumn transplantation and other three measures to improve the quality of seedlings, reducing the cost of raising nursery, and improve economic efficiency. Sowing seedlings cut off roots .In late-July, with four-toothed seedlings cut off from the root of the seedlings to be rooted off the seedlings back into place, and then the seedlings in the same direction overwhelm the soil step on real, and finally drenched water. The survival rate after root cutting 99% higher than the continuous root seedlings 1 ~ 1.6 cm, diameter 0.04 ~ 0.07 cm thick, lateral root length longer than the continuous root 9.19 cm. Seedling seedling transplant survival rate increased by 5% per acre seedlings can be increased by 10 yuan.