思茅松幼林施肥试验初步研究

A Preliminary Research on Fertilization Tests of Young Plantations of Szemao Pines

摘要: 对思茅松幼林进行了8种施肥模式加一个对照进行试验,试验结果表明思茅松幼林的施肥方式应该选择第9种N3P3K2(250 g尿素+400 g过磷酸钙+100 g硫酸钾).此施肥方式的幼林的平均树高、胸径和材积(初植密度为:1 m×2 m,2 m×3 m)分别比对照提高了29.14%和48.64%、18.1%和23.3%、74.14%和106.25%。最佳施肥时期一般选择在5月~6月。

Abstract: 8 fertilization modes plus a control test were implemented in this paper. The test results showed that the 9^th fertilization mode N3P3K2 (250 g + 400 g urea superphosphate + 100 g potassium sulfate) should be selected for young Szemao pine plantations. As compared with on use of 9^th fortilization mode the average tree height, DBH and volume (initial planting density:1 m^* 2 m,2 m^* 3 m) of the young plantation were separately enhanced by 29.14% and 48.64%, 18.1% and 23.3%, 74.14% and 106.25%. The best fertilizing time should be generally selected in May and June.