南美蟛蜞菊在煤矿废弃地的栽培与应用研究

Study of the Cultivation and Application of Wedelia Trilobata in Coal Mine Wastelands

本研究以南美蟛蜞菊Wedelia trilobata为实验材料,选择煤矸石土进行栽培试验研究,选择普通有机土作对照,在栽培期间定期对南美蟛蜞菊的鲜重、生长速度、新芽数、新叶数、叶色等指标进行观察测定。实验结果表明:南美蟛蜞菊在煤矸石土生长40 d时叶色深绿;新增茎节数与有机土植株之比为31∶48,新叶数与有机土植株之比为96∶182,生物量(鲜重)没有出现显著差异。说明南美蟛蜞菊在煤矸石土栽培有良好的生长适应性,适宜用于煤矸石土植被恢复和重建材料。

Cultivation experiment of Wedelia trilobata was conducted in coal -gangue soil with common organic soil as control. During the cultivation the following characteristics of Wedelia trilobata were periodically measured or determined： fresh weigh, growth rate, number of new buds, number of new leaves and leaf color. Results： Wedelia trilobata grown 40d in coal - gangue soil had dark green leaves; the ratio of newly grown stem nodes on plants grown in coal - gangue soil to that of organic soil was 31：48 ; the ratio of new leaves between plants grown in the two kinds of soils was 96 ： 182 ; and there was no significant difference in biomass （fresh weight） between plants grown in the two kinds of soils; these results indicated that Wedelia trilobata had a good growth adaptability in coal - gangue soil;therefore it was suitable to be used in coal mine wastelands for vegetation recovery.