毛竹低产林施肥效果研究

Research on Effect of Applying Fertilizer to Bamboo Low Productive Forest

研究结果表明 :毛竹低产林施用营养液与对照相比 ,施用营养液与混合肥相比 ,对毛竹株数增长率影响均有显著差异 ;施用混合肥与对照相比 ,对毛竹株数增长率影响差异不显著。 2种施肥方案与对照相比 ,对胸径的增长率和退笋株数影响均无显著差异。施用营养液可增加纯收入 ,施用混合肥纯收入反而减少。毛竹低产林施用混合肥效果不明显 ,经济上也不可行 ;而施用营养液可在短时间内迅速提高立竹度 ,用工、投资少 ,效果好 ,经济效益高 ,不失为低产林改造的一条好途径。

Research shows that applying nutritious liquid had obvious influence o n growth rate of bamboo's number compared with combined fertilizer. Two ways of applying fertilizer have no clear difference to the growth rate of the diameter. Applying nutritious liquid can add net profit, while combined one reduce it. So , it is more profitable to apply the former one, which invests a little, but ear ns a lot.