阐述了沙棘的采种、种子处理、营养土配方、营养袋移植、病虫害防治及苗期管理的相关技术要点,指出了沙棘在迪庆州资源丰富且有大面积的宜林地,它不仅成为我国西部地区一种经济林树种,同时它也是高原坝区改善生态环境、植被恢复、造林绿化的优选树种之一.

In order to exploring Rhodiola crenulata nursery technology of Diqing,we have done the gibberellin (GA3)treated seed,sowing,collum cutting tests.Results showed that,800mg/L and 1 000mg/L concentration of gibberellin solution processing seed,can effective improve seed germination and germination potential.Seeding rate of 0.5g/m2,drills for sowing,soil thickness 0.1cm,could have a higher germination rate and seedling number and a faster align time.Seedling growth is gradually accelerating during sprouting to the growth of new leaves stop;Collum cutting at lower density could obtain more robust seedlings.When use seeds and collum to seedling,to promote Rhodiola crenulata seedling growth,it is needed to strengthen management and reasonable application of high content of phosphorus and potassium fertilizer at the right time,and thinning and weeding manner timely.

[Objective]Application effectof compound fertilizer onwalnutwas studied.[Method]Using walnut orchardwith 3 year oldand 16 year oldWen 185 asresearch object,growth and yield of walnut of different fertilization treatments were analyzedin Diqing.[Result]The yield of applying special compound fertilizer on 3 year oldWen 185increased by594.0,891.0,1 287.0 kg/hm2 than applyingfarmyard manure, no fertilizer,applying nitrogen fertilizer.Afterapplying special compound fertilizer on 16 year oldWen 185,the yield ofwalnutwas 4 680.0 kg/hm2,increased by1 320.0 kg/hm2comparisonwith no fertilizer.Yield ofwalnut was the lowest by applyingnitrogen fertilizer.The yieldwas 60% ofyield by applying special compound fertilizer.[Conclusion]Yield-increasing effectwas significant by applying special compound fertilizeron walnut.Special compound fertilizer could be popularized and applied in Diqing.

In order to understand the species and distribution and the status of the local resources of Rhodiola L.in Diqing, we carried out the on-site field investigation at 11 survey areas.It was found that there were a total num-ber of 21 kinds of Rhodiola L., and the Meri Snow Mountain had 11 species.At an altitude of 2900m to 5100m range , the number of Rhodiola L.species showed a trend of increasing at first then decreasing with altitude in-crease.Most species of Rhodiola L.living at an altitude of around 4200m.Growth and reproduction of Rhodiola L.was limited by temperature and moisture, and the area where temperature was too high or too low with low mois-ture conditions is not suitable for their growth.

对云南藏区建造的各种围栏的分析表明,与其他围栏相比,用带刺植物建造生物围栏成本低,封育效果好,利用时间长,还能产生5类经济生态功能,特别适宜和有必要在云南藏区建造.以牲畜防护效能作为当地围栏植物选择的主要指标,兼顾生态效益和经济效益,通过调查初步筛选了5种优良的围栏植物,总结了生物围栏的营建技术.

<正>榆树(Ulmus Pumila I)为榆科落叶乔木,榆树生长快、材质好、适应性强,树皮及根皮有粘液的胶质可做造纸糊料、种子含油率25.5%,可榨油供食用,果,叶、树皮还可如药,能安神利尿,可医治神经衰弱等。迪庆州属高海拨地区,气候寒冷。植被以针叶树种乔木及高山草甸灌丛为主。

随着人民群众物质文化生活的不断丰富和提高.人们对城市绿化环境的需求愈来愈高,这就要求我们在设计植物群落时,既要创造独特的令人赏心悦目的自然环境,又要发挥植物多功能的作用,保护人们赖以生存的生活空间,使城市的自然生态环境不断改善.针对城市园林绿化普遍存在的问题,提出以下探索.