小省藤苗木生长对遮阴和施肥的响应
Journal of Southwest Forestry University(2019)
Abstract
为促进优良藤苗的生长,采用L9(34)正交设计开展施肥试验,探讨其对小省藤苗木生长的影响.结果表明:处理组合的地径、苗高、叶片数和冠幅分别为0.28~0.51 cm、13.5~16.9 cm、1.5~3.4片/株和11.8~16.7 cm,处理组合间呈现极显著或显著差异(P<0.01或P<0.05);正交9个处理组合的4个指标均极显著地优于对照(P<0.01),遮阴90% 与施3 g/株过磷酸钙和0.7 g/株尿素生长最优.遮阴是影响苗高和叶片数的主导因子(RA>RC>RB),影响地径和冠幅的主导因子则是尿素(RC>RA>RB),即小省藤对遮阴和N肥的需求较高.
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