马尾松大田育苗切根技术研究

Studies on Root-cutting Techniques for Field Seedlings of Pinus massonina

研究结果表明 ,在生长季节对苗木施行切根 ,对提高苗木质量的效应是十分明显的。通过切根 ,苗木茎干粗壮 ,根系发达 ,高径比与冠根比达到优质苗的比值 ,苗木须根数量多 ,菌根感染率高 ,优质苗率达 80 %以上。为了尽快地推广、应用切根技术 ,同时还研制了手工操作苗木切根铲 ,该铲经过近两年生产应用验证 ,实用性强、效果好 。

The results showed that,in the growth seasons of Pinus massoniana,cutting roots could significantly improved the quality of seedlings. By this measure, the seedlings could obtained thick and strong stems, good root system,high ratio of heighth to diameter,high ratio of crown to root,abundant fibrous roots and high fate of mycorhiza and fine seedlings could take more than 80%.In order to rapidly popularize and apply this technique , shovel for artificial cutting roots was developed.