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雪松是一种优良的行道树和庭园绿化树种。为了缩短雪松育苗周期和延长生长时间,加速苗木的繁育,在1985年11月份我们进行了电热温床扦插育苗试验,取得了一定的效果。 一、试验经过 (一)试验地情况 1.试验地的选择:选在地势平坦、阳光充足、无风的地方作苗圃地,在其上罩以塑料大棚(对照也罩在塑料大棚内)。 2.试验地的处理:在扦插前10天左右用30％福尔马林40倍液和0.25公斤的呋喃丹与土壤搅拌,并用塑料薄膜覆盖7天。 3.苗床的制作:先挖深20厘米、宽90厘米的坑(坑长情况应根据电热线长短不同,相应变化),在底层和边缘铺5厘米厚的砻糠灰作为隔热层,然后在隔热层上铺7厘米左右的土,并安置电热线(为DV21012型,上海农机所生产),计10行,再在电热线上铺土8厘米,这时整个苗床基本制作完毕(图1)。
Cedar is an excellent tree plantation and landscaping tree species. In order to shorten the cedar nursery cycle and extend the growth time to accelerate the breeding of nursery stock, in November 1985 we conducted a hot cuttage seedling cutting experiments and achieved some results. First, the test after (a) the test site 1. The choice of test sites: election in the flat, sunny, windy place for nursery, in its plastic cover on the cover (control also shrouded in plastic shed). 2. Experimental site treatment: 10 days before cuttings with 30% formalin 40 times and 0.25 kg of carbofuran stirring with the soil, and covered with plastic film for 7 days. Seedbed production: first digging depth of 20 cm, width of 90 cm pit (pit length should be based on the length of the heating wire, the corresponding changes), the bottom and the edge Shop 5 cm thick chaff ash as the insulation layer, and then On the insulation layer of about 7 cm of soil, and install electric hotline (for DV21012 type, Shanghai Agricultural Machinery produced), 10 lines, and then in the hotline 8 cm soil, then the entire seedbed is basically completed (Figure 1).