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香根草施肥与防治土壤侵蚀的效果
Effects of Applying Fertilizer to Vetiver Grass on Soil Erosion Control
【摘要】 为探索通过施用肥料加快香根草生长,促进生物篱形成,作为防治土壤侵蚀的措施,自1995年开始,开展了本项研究。试验结果表明,在农耕地种植香根草,施肥无明显效果。如在农耕地繁殖普根本苗,需要施用化肥时,以做追肥为宜。在济薄的坡地种植香根草,施用肥料有明显的效果,并以有机肥与化肥配施效果较佳。化肥中如缺乏磷肥,将严重影响香根革的生长;在氮磷钾配合施用时,分次施用较移栽时全部一次施入为好。在瘦坡地施肥,有利于香根草篱的形成,对水土流失的控制有明显的效果。
【Abstract】 In order to explore the measures of promoting the growth of Vetiver grass and to speed up the popularization of biological methods to control erosion, with the support of the University of Hong Kong, a fertilizer trial of Vetiver grass for erosioncontrol was conducted since 1995. The results indicated that, on farmland. applying fertilizer to Vetiver grass showed no obvious effect. If we must apply some fertilizer to Vetiver in order to multiply seedlings, we had better use fertilizer as after manure. On infertile sloping land (bare land), the application of fertilizer had a distinct effect upon Vetiver grass, and the organic manure applied together with some chemical fertilizer was the best among all treaments. The lack of phosphorus fertilizerseriously disturbed the growth of Vetiver grass. Applying chemical fertilizer with split application was obviously better thanthat applying the whole quantity at transplanting. The results also indicated, on infertile sloping land, applying fertilizer promoted the formation of Vetiver hedgerows and, therefore, had obvious effect on erosion control.
【Key words】 Vetiver grass; Applying fertilizer; Soil erosion; Soil and water conservation;
- 【文献出处】 西南农业学报 ,SOUTHWEST CHINA JOURNAL OF AGRICULTURAL SCIENCES , 编辑部邮箱 ,1998年02期
- 【分类号】S54
- 【被引频次】14
- 【下载频次】91