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杨树是我区主要速生树种,广泛应用于林带和绿化中。一般採用插条繁殖,需条多、产量低、成本高,其林木寿命也短,易患心腐病和开裂病。改用播种育苗,就可提高苗木产量,降低造林成本,并延长树龄和减少病害。 银白杨、银灰杨、黑杨、杂交杨等,阿尔泰山麓、额尔齐斯河两岸,多有分布。银白杨、银灰杨种子五月中、下旬成熟,黑杨六月上旬成熟。在阿勒泰地区,随熟随採随播,发芽率极高。但平原地区温度高、蒸发盛、溼度小、日照长,播种育苗很难成活。我们在石河子地区,进行了3—4年的摸索,基本上已冲破了技术关。现将点滴体会介绍于下。
Poplar is our main fast-growing tree species, widely used in forest and greening. The general use of cutting propagation, need more, low output, high cost, short life of trees, susceptible to heart disease and cracking disease. Use seeding seedlings, seedlings can increase production, reduce afforestation costs, and extend the tree age and reduce disease. Poplar, silver poplar, black poplar, hybrid poplar, altai foothills, both sides of the Irtysh, there are many distribution. Poplar, poplar seeds mature in mid-May, black poplar mature in early June. In Altay area, with the maturity of the crop, the germination rate is very high. However, the plains of high temperature, evaporation, humidity, long sunshine, seeding nursery is difficult to survive. In the Shihezi area, we conducted a 3-4-year exploration and basically we have broken through the technology barrier. Now experience will be introduced below.