三种土壤类型中南天竹差异性的研究

石灰岩地区的生态重建和植被恢复问题一直备受关注。用盆栽法,研究了黑色石灰土、紫色土、黄壤三种不同土壤类型对南天竹的影响。试验表明:除紫色土中的南天竹叶片P含量高于其他两种土壤,三者之间差异均达到显著水平(P<0.05)外,黑色石灰土中的南天竹叶绿素、类胡萝卜素、叶片的N、可溶性糖和蛋白质含量均高于其他两种土壤,其差异性与黄壤达到显著水平(P<0.05),与紫色土的差异性未达到显著水平(P>0.05),而紫色土与黄壤的差异也达到了显著水平(P<0.05)。各项测定指标的总体情况是黄壤<紫色土<黑色石灰土。该试验证明将南天竹用于石灰岩地区的植被恢复和经济发展是完全可行的。

Research on differences of heavenly bamboo growing in three types of soil

Ecological restoration and vegetation restoration in limestone zone are always on the focus of research. Heavenly bamboo was planted to pots with three different types of soil(black limestone soil,yellow soil and purple soil)in order to study the differences of heavenly bamboo. The results showed that the contents of phosphorus in heavenly bamboo growing in purple soil were higher than that in other two types(the difference among them was significant). But the contents of chlorophyll,carotenoid,nitrogen,soluble sugar and protein in black limestone soil were the highest. The difference of them between black limestone soil and yellow soil was significant,but the difference between black limestone soil and purple soil was not significant. The difference between purple soil and yellow soil was significant,too. In a word,heavenly bamboo grew best in black limestone soil but worst in yellow soil. So planting heavenly bamboo in limestone zone is a good way to realize ecological restoration and economic development.