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运用正交试验设计探讨了N(尿素 )、P(过磷酸钙 )、K(氯化钾 )和有机肥 (鸡粪 )对厚荚相思生长及干形的影响。试验结果表明 ,不同施肥处理对树高、胸径、单株材积生长有极显著影响 ,其中以 4号处理的单株材积生长量最大 ,达 0 .0 391m3,比 1 0号处理 (对照 ,不施肥 )增加了 99.5 %。从生长量及经济效益 (产出投入比 )分析 ,最佳施肥处理为 9号 ,其次为 7号。经方差分析的综合比较 ,选择N 3水平 ,P1水平 ,K1水平 ,有机肥 2水平 ,即每株分别施入 2 0 0g尿素 ,30 0 g过磷酸钙 ,5 0 g氯化钾 ,2 5 0 0 g鸡粪效果最好 ,经济效益高。
The effects of N (urea), P (superphosphate), K (potassium chloride) and organic manure (chicken manure) on the growth and dryness of Acacia crassicarpae were studied by orthogonal design. The results showed that different fertilization treatments had a significant effect on tree height, diameter at breast height and volume per plant, of which the treatment of No.4 treatment had the largest volume growth of0.0391m3, Fertilization) increased by 99.5%. From the amount of growth and economic efficiency (output to input ratio) analysis, the best fertilizer treatment for the 9th, followed by the 7th. By comprehensive analysis of variance analysis, N 3 level, P1 level, K 1 level and organic fertilizer level 2 were selected, that is, 200 g of urea, 30 0 g of superphosphate, 50 g of potassium chloride, 25 0 0 g chicken manure best, high economic efficiency.