五针松是当前国内外制作盆景的紧俏商品,由于它生长缓慢,用种子繁殖时间比较长,在采用无性繁殖法的过程中,笔者摸索出了一套快速高效的繁殖方法,现介绍如下:一、扦插:采用双层薄膜扦插育苗,具体做法为:1.选择一个向阳、通风、排水良好、地势平整、水源方便的地方造作苗床。2.苗床可大可小,根据需要而定。通常用砖砌成宽1m、高40cm的四方形挡风墙。床底先放一层3cm厚的粗砂粒,再填入一层由3份细砂、7份黄土配成的混合土,或者是酸性营养土。3.苗床处理。先把苗床土做平,然后一次性浇透水,再用50%的多菌灵或58%的代森锰锌500倍液喷洒床面,进行土壤消毒。稍干后,盖上第一层塑料薄膜(越薄越好),四周压好,24小时后即可进 Pinus ponderosa is the current domestic and foreign production of the bonsai commodity, because of its slow growth, propagation time with seeds longer, the use of asexual reproduction in the process, I worked out a set of fast and efficient breeding methods are as follows: First, the cuttings: cuttings with double-layer film nursery, the specific practices are: 1. Choose a sunny, well-ventilated, well drained, flat terrain, easy to make water for seedbed. 2. Seedbed can be large or small, according to need. Usually brick into a width of 1m, 40cm high square wall. Put a layer of 3cm thick grit at the bottom of the bed, and then fill it with a mixture of 3 fine sand and 7 loess, or acidic nutrition soil. 3 seedbed treatment. The first to make the soil bed flat, and then once drenched water, and then 50% carbendazim or 58% Mancozeb 500 times spray the bed, soil disinfection. After a little dry, cover the first layer of plastic film (the thinner the better), around a good pressure, can enter after 24 hours