辽西地区困难立地钻孔覆膜造林技术研究  

Study on Afforestation Techniques of Drilling and Film Mulching in Difficult Site of Western Liaoning

作　　者：董鑫 DONG Xin(Huludao Bureau of Forest Resources Protection,Huludao,Liaoning 125000,China)

机构地区：[1]葫芦岛市森林资源保护局,辽宁葫芦岛125000

出　　处：《林业调查规划》2019年第4期220-224,共5页Forest Inventory and Planning

摘　　要：以容器杯油松苗为材料设计L9(3^4)正交试验,对影响其造林成活率的造林时间、立地条件、浇水频率、是否覆膜等影响因子进行多种组合的试验研究,用极差分析方法筛选出一套科学完善的造林配套技术,并与常规造林的成活率、林木增长量和造林成本做对比研究。结果表明:春、雨、秋3季最佳造林条件分别是A1B1C3D3、A1B1C2D2、A2B1C3D3;3个组合的造林成活率与常规造林相较,分别提高了31.6%、28.6%和27.1%;春季造林中,苗高、地径增长量和侧根数差异显著,主根增长量差异不显著;雨季造林中,苗高、地径和主根增长量均不显著,侧根数差异显著;秋季造林中,苗高、地径增长量和侧根数差异显著,而主根增长量差异不显著;与常规造林相较,应用钻孔覆膜造林成本较低。The orthogonal test L^9(34) of the Pinus tabuliformis container seedling was designed to study the effects of different afforestation time,site condition,watering frequency and film mulching on the afforestation survival rate and a set of scientific and perfect afforestation techniques was selected by range analysis method to carry out the comparative study with conventional afforestation techniques on survival rate,trees growth and afforestation cost.The results showed that the best afforestation conditions of three seasons were A1B1C3D3,A1B1C2D2 and A2B1C3D3,the survival rate of which increased by 31.6%,28.6% and 27.1% compared with conventional afforestation.In spring,there were significant differences in seedling height,ground diameter growth and lateral root number,but no significant differences in principal root growth.In rainy season,seedling height,ground diameter and principal root growth were not significant,but the number of lateral roots was significantly different.In autumn,the difference of seedling height,ground diameter growth and lateral root number was significant,but the difference of principal root growth was not significant.Compared with conventional afforestation,the cost of afforestation techniques of drilling and film mulching was lower.

关 键 词：钻孔覆膜造林技术 困难立地 常规造林 正交试验 造林成活率 方差分析 辽西地区 

分 类 号：S728[农业科学—林木遗传育种] S725.8[农业科学—林学]