平茬方式对沙柳再萌生能力的影响

Impact of Stubbling Methods on the Re-sprouting Ability of Salix Mongolia

研究了不同平茬方式对沙柳再萌生能力的影响,分析了人工镰割、人工锯割、人工刀砍三种平茬方式平茬后的茬口形态及再萌生沙柳的枝条数量、直径、柳条高度。结果表明：最佳平茬方式为人工镰割,其茬口倾斜度最大,茬口背风,有利于茬口防风沙侵袭;平茬后试验区域再萌生枝条数量平均达96.9根,比锯割方式和刀砍方式多出近7根;三种平茬方式对沙柳再萌生枝条直径的影响不大,平均在6~8 mm之间波动;平茬后6~8月份沙柳的生长高度没有明显差异;9月份,镰刀平茬后的沙柳高度优势有所显现,平均值为158 cm。

The effect of different stubbling methods on the re-sprouting of Salix Mongolia is studied and the shape, re -sprouting branches number, diameter, height wicker of Salix after artificial sickle cutting, artificial sawing and artificial knifed cutting methods are analyzed. The results show that the best way is artificial sickle cutting due to its maximum cutting inclination , on the leeward cutting, it conduces crops to anti sandstorms; the average number of re-sprouting branches can reach 96.9, compared with artificial sawing and artificial knifed cutting methods, it has nearly 7 more than them; artificial sickle cutting, artificial sawing, artificial knifed cutting methods have little effect on diameter of Salix branches, and it fluctuates between 6-8 mm; there is not significant difference in height growth from June to August. Height growth advantage after sickle cutting appears in September, with average value reaching up to 158 cm.