晋东南中山区不同坡向仁用杏产量影响因子分析

Analysis on Influencing Factors of Almond-apricot Yield in Different Slope Directions in Zhongshan Area of Southeastern Shanxi

[目的]分析影响晋东南中山区不同坡向仁用杏产量的环境因子。[方法]在林龄、林分密度、土层厚度相同的条件下,研究土壤肥力、土壤含水量、光照等对不同坡向仁用杏产量的影响。[结果]2003~2007年间,阳坡仁用杏单株产量和出仁率均高于阴坡,阳坡仁用杏5年平均单株产量和出仁率均较阴坡高59.0%。2006年阳坡仁用杏单株产量最高（2.7 kg）,2007年阴坡仁用杏单株产量最低（1.4kg）。阴坡土壤pH值略低于阳坡,而有机质、全N、全P、全K含量高于阳坡 仁用杏萌芽期与落叶期的阴坡、阳坡土壤含水率无显著差异,而新梢生长期、果实膨大期及整个生长期阴坡平均土壤含水率显著高于阳坡。[结论]光照为晋东南中山区不同坡向仁用杏产量的首要影响因子。

[Objective] The aim was to analyze the environmental factors influencing the yield of almond-apricot in different slope directions in Zhongshan area of southeastern Sanxi.[Method] Under the same condition of stand age,stand density and soil thickness,the effects of soil fertility,soil water content,illumination on yield of almond-apricot in different slope directions were studied.[Result] During 2003-2007,per plant yield and kernel percent of almond-apricot in sunny slope were higher than those in shady slope. The average yield per plant and kernel percent of almond-apricot in 5 years in sun- ny slope were all higher 59.0% than those in shady slope. Per plant yield of almond-apricot in sunny slope in 2006 was the highest （2.7 kg）, while that in shady slope in 2007 was the lowest （ 1.4 kg）. The soil pH value in shady slope was slightly lower than that in sunny slope, while the contents of organic matter and total N, P, K were all higher than those in sunny slope. The soil water content in shady slope and sunny slope had no difference at germination stage and defoliating stage, while the average soil water content in shady slope was significantly higher than that in sunny slope in shcot-growing stage, fruit-development stage and the whole growth stage. [Conclusion] Illumination was the most important influencing factor on the yield of almond-apricot in different slope directions in Zhongshan area of southeastern .Sanxi.