青海云杉不同龄针叶的水分状况比较陈惠兰，张宝琳（甘肃省林业科学研究所７３００４６）青海云杉为耐萌、喜湿树种，近年来，常被城市庭园绿化所采用。研究其不同叶龄针叶的水分状况。了解它们之间的关系，就可在不同的生长发育期内，依据各针叶的外部表现，进行及时补水... Comparison of water conditions of spruce needle of Qinghai spruce CHEN Hui-lan, ZHANG Bao-lin (Gansu Academy of Forestry 730046) Picea crassifolia is a tolerant and hi-wet tree species, which is often adopted by urban garden in recent years. Studied the water content of different leaf age needles. Understand the relationship between them, you can in different growth and development period, according to the external performance of the conifers, timely replenishment ...