槟榔不同株行距间作香草兰对土壤养分和微生物的影响

为了揭示槟榔不同株行距间作香草兰对土壤微生物和土壤养分的影响，以生产上槟榔3个种植密度间作香草兰为处理，人工荫棚单作香草兰为对照，测定和分析土壤中微生物的数量和土壤养分的含量。结果表明，槟榔间作香草兰可显著提高土壤微生物的数量，改良土壤微生物群落中真菌、 细菌和放线菌的比例。槟榔株行距为2.0 m2.5 m（Tr2）的处理，土壤pH值及有机质、 全K、 碱解N、 速效P、 速效K、 交换性Ca、 有效Fe、 有效B含量均显著提高。Pearson积矩相关分析表明，土壤中各类微生物的数量与土壤养分含量之间存在着多种显著的相关关系。槟榔株行距为2.0 m2.5 m间作香草兰对土壤微生物数量及其比例与土壤养分含量具有良好的调节作用，且彼此具有显著相关性。

Influence of different planting spacing of areca nut intercropping with Vanilla on soil microbes and nutrients

This paper was aimed to study the effects of areca nut intercropping with vanilla on soil microbes and nutrients. The different plant and row densities of areca nut intercropping with vanilla and monocropping of vanilla were used as treatments to study the number of soil microbes, the content of soil nutrients, as well as the relationship among them. The results indicated that the intercropping system significantly increased the number of soil microbes, moreover, ameliorated microbial community structure. The treatment of planting spacing of 2.0 m x 2.5 m (Tr2) of areca nut significantly increased soil pH, organic matter, total potassium, alkaline hydrolysable N, available P, available K, exchangeable Ca, available iron and available boron. The Pearson Product moment correlation analysis showed that the number of soil microbes positively correlated with the content of soil nutrients in vanilla plantation. In conclusion, the sound system was planting spacing of 2.0 m x 2.5 m (Tr2) of areca nut intercropping with vanilla, which had obvious effects on soil microbial community structure and soil nutrients, furthermore, the number of soil microbes was closely related to the content of soil nutrients.