摘要
本文运用PV技术研究了华北地区常见造林树种的耐旱性,结果指出:根据嫩枝生长初期初始失膨点总体渗透势的大小被试树种耐旱性由弱到强分组排序为5组:(1)臭椿、黄栌、合欢、核桃、银杏、国槐;(2)刺槐、杜仲、枸杞;(3)白蜡、白皮松、沙棘、山桃、白榆;(4)樟子松、山杏;(5)侧柏、桧柏。
The paper researched on the drought resistance of common afforestation trees in North China by PV (Presssure-Volume) technique. The results showed that the tested trees was divided into five groups according to their drought resistance which was obtained by the bulk-averaged osmotic potential when the turgor pressure of shootlet initially reached 0 in initial growth period of young shoots, and that the trees was ordered by their drought resistance (from low to high) as: (1) Ailanthus altissima, Cotinus coggygria, Albizia julibrissin, Juglans regia, Ginkgo biloba, Sophora japonica.(2)Robinia pseudoacacia, Eucommia ulmoides, Lycium chinense.(3)Fraxinus chinensis,Pinus bungeana, Hippophae rhamnoides, Prunus davidiana, Ulmus pumila.(4)Pinus sylvestris var. mongolia, Prunus armeniaca var. ansu. (5) Platycladus orientalis, Sabina chinensis.
关键词
PV技术
耐旱性
渗透势
造林
树种
PV Technique Drought Resistance Osmotic Potential