青藏高原乡土难繁树种祁连圆柏快繁及产业化

祁连圆柏主要分布在柴达木盆地、祁连山地和黄河上游谷地，以其抗风、抗寒、抗干旱的特点和广泛的生态适应性，被用于广阔的生态建设领域，是海拔2200-4300米高寒阳坡分布的唯一针叶树种。祁连圆柏繁殖力低、无性繁殖产业化难的问题在本成果中得到解决。经鉴定委员会成果评价，研究成果达到国内领先水平，颁布标准一项。 1、针对祁连圆柏种子休眠期长、繁殖率低、育苗周期长等难题，重点对祁连圆柏扦插繁殖技术进行攻关研究，形成了祁连圆柏快繁技术体系。建立采穗圃、定植圃和快繁生产区，共扦插59万穗插条，年产种苗10万株以上。规模化生产苗木成活率已达到70%以上，较以往扦插成活率提高20-30%，育苗周期缩短2-4年。 2、对祁连圆柏快繁技术体系中的关键技术进一步熟化，在以下三个方面取得突破性进展：①对穗条半木质化控制技术进行了研究，延缓母株新生枝条的木质化程度，适宜采条期由原来的10-15天增加到40天左右 ②通过促进根原基形成技术的研究，解决了祁连圆柏扦插难度大、不易生根的难题，使扦插成活率在规模化生产条件下稳定在70%以上。③基质优化配方的研制更具实用性，扦插生产成本大大降低 3、制订了《祁连圆柏容器扦插育苗技术》标准，已由青海省质量技术监督局颁布：2006年1月13日发布，2006年3月1日实施， 编号：DB63/T564-2005。 成果的形成是建立在解决生产实际问题的基础上，实用性较强，边研究，边转化。国内领先的祁连圆柏扦插育苗技术体系手段先进、指标可靠、工艺成熟。可为生态建设、城镇绿化等领域大量提供优质商品种苗。Sabina przewalskii is mainly distributed in the Qaidam Basin, Qilian Mountains and the upper reaches of the Yellow River Valley. With the characteristics of wind resistance, cold tolerance, drought resistance and wide ecological adaptability, it is widely used in ecological construction, and is the only coniferous species distributed on alpine sunny slopes at an altitude of 2200-4300 meters. The problems of low reproductive capacity and difficulties in industrialized asexual propagation of Sabina przewalskii have been solved in this research achievement. Appraised by the achievement appraisal committee, the research result has reached the domestically leading level, and one industry standard has been promulgated. 1. Aiming at the difficulties such as long seed dormancy period, low reproductive rate and long seedling raising cycle of Sabina przewalskii, key research was conducted on its cutting propagation technology, and a rapid propagation technical system for Sabina przewalskii was established. A scion nursery, planting nursery and rapid propagation production area were built, with a total of 590,000 cutting slips planted, and the annual output of seedlings exceeds 100,000 plants. The survival rate of large-scale seedling production has reached more than 70%, which is 20-30% higher than previous cutting survival rates, and the seedling raising cycle is shortened by 2-4 years. 2. Further optimization was conducted on the key technologies in the rapid propagation technical system of Sabina przewalskii, and breakthrough progress was made in the following three aspects: ① Research on the semi-lignified shoot control technology, which delays the lignification degree of new shoots of mother plants, extending the suitable cutting collection period from the original 10-15 days to about 40 days; ② Research on the technology of promoting root primordium formation, solving the difficulties of difficult cutting and rooting of Sabina przewalskii, stabilizing the cutting survival rate at more than 70% under large-scale production conditions; ③ The developed optimized substrate formula is more practical, greatly reducing the cutting production cost. 3. The standard "Technical Specification for Container Cutting Seedling Raising of Sabina przewalskii" was formulated and promulgated by the Qinghai Provincial Bureau of Quality and Technical Supervision: released on January 13, 2006, implemented on March 1, 2006, with the number DB63/T564-2005. This achievement was developed based on solving practical production problems, with strong practicality, and was transformed while conducting research. The domestically leading cutting seedling raising technical system for Sabina przewalskii features advanced methods, reliable indicators and mature processes, and can provide a large number of high-quality commercial seedlings for fields such as ecological construction and urban greening.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于青藏高原乡土树种祁连圆柏，针对其繁殖力低、产业化难的问题，通过攻关研究形成了快繁技术体系，显著提高了扦插成活率并缩短了育苗周期。研究成果包括制定了相关技术标准，已达到国内领先水平，旨在为生态建设和城镇绿化提供优质种苗。