新疆杨覆膜扦插育苗试验

EXPERIMENT OF SEEDLING CULTIVATION BYCUTTING AND FILM-COVERINGON POPULUS ALBA VAR.PYRAMIDALIS

新疆杨作为宁夏主要造林树种之一,具有较强的适应性和抗天牛特性,但采取常规扦插育(89.3%和67.6%)相比有较大差异,主要原因:一苗成活率较低,合格苗数量相对少,为了提高新疆杨育苗质量,采用了地膜覆盖扦插育苗试验。试是受2000年春苗价格过热的影响,致使种条质量低验结果表明:可提高苗木成活率21.7～25个百分点,1年生苗高比对照增加0.71～0.97m,2年生于1999年;二是2000年春季气温不稳定,5月上旬苗木合格率比对照提高16.2～17.5个百分点。至中旬连降两场中雪,地温回升缓慢。

The survival rate and quality of seedlings of Populus alba var.pyramidalis are lower when using conventional method of seedling cultivation.Cutting and filmcovering for seedling cultivation were used to raise seedling quality of Populus alba var.pyramidalis.Result of the experiment Showed that survival rate of seedlings increased by 21.7～25%.Height of oneannual seedlings was 0.71～0.97 m higher than the check.The rate of certified seedlings of 2 years old was 16.2～17.5 percent higher than the check.