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Northwest University of Science and Technology (2010)

Study on the Resource Investigation and Technique Propagation of Elaeagnus Angustifolia in Desert Region of Gansu Province

谢新平; Xie Xin Ping

Titre : Study on the Resource Investigation and Technique Propagation of Elaeagnus Angustifolia in Desert Region of Gansu Province

Auteur : 谢新平; Xie Xin Ping

Grade : Master’s Theses 2010

Université : Northwest University of Science and Technology

Résumé
Elaeagnus angustifolia, is an important tree with ecological benefit and economical benefit, which mainly distribute in dry region of provinces and regions of Northwest and Western Inner Mongolia, and is a main tree for defending disease from wind and sand at Hexi corridor of Gansu province. Elaeagnus angustifolia have the characteristics of drought-resistance, wind and sand-resistance, saline-resistance and barren-resistance. The project of Study on the Technique of Selection and Propagation of Fine Economy Plant Varieties in Desert Region, which is designed by Gansu Forest and Technology Research Institute in 2007, this project was distributed by Forestry Research Institute of Chinese Academy of Forestry, and then, the study of variety selection and propagation were conducted for two years. Through the introduction and colonization of Elaeagnus angustifolia seedlings, the cutting propagation and container nursery, comprehensive value were made with the experiment results and reference of other factors, fine varieties of Elaeagnus angustifolia which was suitable for cultivation breeding in China were selected preliminary.1.Through the investigation of resource, key regions of Elaeagnus angustifolia was grasped preliminary, there are 1seed 1variation 24 varieties of Elaeagnus angustifolia in Gansu province. There was area of artificial forest of 2.64×104 hm2 at distributions of Wuwei, Zhangye and Jiuquan, and counties of Minqin, Liangzhou, Ganzhou, Linze, Gotai, Anxi, Jinta and Jinchang has area of more than ten thousand Chinese MU. The Elaeagnus angustifolia forest distributes assembly, and the break-wind belt holds the largest area. The areas with best quality of fruit are Zhangye, Linze, Jinta, and the fruit with good color is plump without disease and insect. The rate of fruiting is largest. The main distributions of Elaeagnus angustifolia was ensure, and given a base to take seed, checked quality of seed and identified variety in Gansu province.2.Through the experiment on the cutting propagation and container nursery of 24 varieties of Elaeagnus angustifolia,which from 15 origin regions, grasped the techniques of cutting propagation and container nursery. The results shown that sand storage method was adopted to germination during propagation the seed,use nutrition soil when breeding could increase the rate of emergence ; early spring sowing had the highest seeding rate. Elaeagnus angustifolia hardwood cutting operation techniques were easy, the cutting propagation after soil unfrozen, with cuttings 18-20cm.3.The frostbite was invested for seedling. The result shown that the rate of frozen seedling is 42%, and 72% of the cutting seedling was harmful. The ability to defend frostbite of seedling is stronger than that of the cutting seedling

Mots clés : Elaeagnus angustifolia; resource investigation; selection; propagation technique; Gansu Province;

Présentation (CNKI)

Page publiée le 11 septembre 2014, mise à jour le 2 avril 2018