建水县岩溶山地不同造林时间造林效果分析

在建水县具有代表性的岩溶山地,对马鹿花、苦刺、新银合欢、任豆等树种不同时间造林试验研究结果表明,马鹿花不同时间造林效果差异显著,以7～8月的造林效果较好;苦刺和新银合欢在不同时间造林效果均较好;新银合欢造林成活率在85.4～94.1%之间,保存率在48.3～61.7%之间;任豆的直播造林效果较差,到第2年基本死亡。

Analyses of the afforestation Effects of Different Planting Time in Karst area of Jianshui

A study on afforestation experiments,which were conducted at different times upon Pueraria wallichii DC.,Sophora davidii Hance.,Leucaena leucooephala cv.Salvador（L.） Benth.,and Zenia insignis Chun in typical karst mountains in Jianshui County,shows different afforestation effects of such species.The afforestation effect of Pueraria wallichii DC.varies significantly in terms of different periods,the best of which is in July and August.The afforestation of Sophora davidii Hance.and Leucaena leucooephala cv.Salvador（L.） Benth.in different periods has a better effect.The afforestation survival rate and preserving rate of Leucaena leucooephala cv.Salvador（L.） Benth.reaches 85.4～94.1% and 48.3～61.7% respectively.And the direct seeding afforestation of Zenia insignis Chun,most of which went dead in the following year,is less effective than the others.