长期漫灌对针叶树苗是有害的,但短期漫灌(4天) 是否有害,未见报道。因此,通过对花旗松、挪威云杉和欧洲赤松苗木的短期漫灌实验,探讨其对苗木生长的影响。将上面三种针叶树种子进行层积催芽处理,待发芽后播入事先准备好的装有石英砂的玻璃管中,放入温室内培养。各种苗木每周浇水3次,其中挪威云杉施两次营养液,加一次 Long-term flooding on coniferous saplings is harmful, but short-term flood irrigation (4 days) is harmful, has not been reported. Therefore, through the short-term flood experiment on Douglas fir, Norwegian spruce and European red pine seedlings to explore the impact on seedling growth. The above three kinds of conifer seed germination stratification, to be sown after germination into a prepared glass tube filled with quartz sand, into the greenhouse cultivation. A variety of seedlings watering 3 times a week, including Norway spruce Shi two nutrient solution, plus one