不同施肥处理对4种相思树种生长的影响

The Influence of Different Fertilization Treatments on Four Kinds of Acacia Confusa

对4种相思树种进行12种施肥处理,跟踪调查3a的树高和胸径,旨在找出不同树种的最佳施肥方法,为4种相思树种的营林生产提供依据。对经过3a的观测数据进行分析结果表明:对马占相思树高和胸径影响较大的施肥处理为5号,生长较快,树高较高,胸径较粗;施肥处理3号对厚荚相思树的树高及胸径影响较大,施肥效果最好,为厚荚相思的最佳施肥方法;处理9号对灰木相思树高和胸径影响较大,施肥效果最好,为灰木相思最佳施肥方法;12种施肥处理对卷荚相思试验中,处理10号较好,平均树高和胸径较高,为厚荚相思的最佳施肥方法。

Four kinds of Acacia confusa were fertilized by 12 kinds of fertilization ways,height and diameter of Acacia confusa were surveyed in three years.The purpose of the investigation was to select optimal fertilization methods that were as a theoretical basis of afforestation.3 years of investigating data showed that the fifth fertilization was the optimal fertilization method for A.mangium with rapid growth,high height and thick diameter.The third fertilization had great effect on the height and diameter of A.crassicarpa,was the optimal fertilization methods.And the ninth fertilization was optimal fertilization method for A.implexa.optimal fertilization method for A.cincinnata was the tenth fertilization.