种植方式和越冬保护措施对芦竹成活率的影响

芦竹(Arundo donax Linn.)为禾本科芦竹属多年生高大禾草,是极具应用潜力的生物质能源作物1,2]和理想的造纸原料3].芦竹适应范围广,抗涝能力强,还抗瘠薄、耐盐碱和耐干旱4];对重金属污染水体有较好的修复作用,因此,可用作改良盐碱地和紫色页岩,防止水土流失5,6].另外,芦竹株形优美,淡紫色的圆锥花序,碧绿的条形叶片,丰富了北方水体和庭院的景观.芦竹在北方虽有引种历史7],但由于越冬表现不良,很少产生有活力的种子8],因而在北方干旱地区少有种植.

Effects of Planting Methods and Overwintering Protection on Growth of Arundo donax

Arundo donax Linn. was selected as representation of giant grass. The main growth factors, planting materials and soil texture were analyzed by several spot experiments in Beijing. The result showed that A. donax was able to endure drought and leanness. The survival rate was above 85%. It grew normally in the soil where the organic matter level was 0.413%. Moreover, depending only on precipitation, A. donax grew with high biomass. The overwintering survival rate of A. donax increased significantly if some protection measures were taken, and harvesting in March of next year was one of the most feasible measures.