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在干旱半干旱地区新疆杨(Populus alba var.pyramidalis Bge.)造林中,研究了树坑不同保湿措施覆膜、覆石和松土对土壤温度和湿度,苗木成活率和生长量的影响。结果表明:覆石措施的土壤相对含水量,苗木成活率、生根数、根长、根粗、新枝数、枝长和根粗分别为32.5%、82.8%、12.1条/株、18.5cm、5.0mm、9.4个/株、74.9cm和2.5cm,较对照CK分别提高了26.5%、27.0%、218.4%、115.1%、137.4%、51.6%、57.4%和108.3%,差异均达到极显著水平(P<0.01)。鉴于树坑覆石保湿措施的相对最佳效果,建议在新疆杨造林中可采用这一措施来抗旱保湿。
In arid and semiarid region of Xinjiang (Populus alba var. Pyramidalis Bge.) Afforestation, the effect of different moisturizing measures of tree pits on the soil temperature and humidity, seedling survival rate and growth were studied. The results showed that the relative water content, seedling survival rate, rooting number, root length, root thickness, new branch number, branch length and root diameter were 32.5%, 82.8%, 12.1, 18.5cm, 5.0 mm, 9.4 / plant, 74.9 cm and 2.5 cm respectively, which were significantly increased by 26.5%, 27.0%, 218.4%, 115.1%, 137.4%, 51.6%, 57.4% and 108.3% P <0.01). In view of the relative best effect of the tree-covered rubble moisturizing measures, it is suggested that this measure can be used to combat drought and moisturize in the afforestation of the forest in Xinjiang.