水土保持作物百喜草研究

Studies on Cover Crop with Paspalum notatum Flugge

经长期筛选、观测及试验研究,其结果显示,百喜草为目前热带、亚热带最佳的覆盖作物。它具有耐瘠、耐旱、耐酸碱、耐踏、耐浸及中等耐荫等特性,种植于果园坡面、梯壁、沟渠、山边沟、边坡、农路等,不但可保护或延长设施的使用年限,达成了保育耕作及省工经营,而且绿化了坡地农场,也获得了环境保育的成效。40多年径流小区试验结果表明,百喜草对土壤冲蚀控制效果良好,降低泥砂的功效极为显着,亦能有限度降低洪峰流量,利于防洪。同时,百喜草是一种土壤优化作物和生态环境保育作物。

Results of a series observation, selections and studies proved that Paspalum notatun Flugge is the best covering crop for tropic and subtropical regions at present. Paspalum notatum Flugge has characteristics of strong endurance of poor soil, drought, acid, alkaline, trample, soak and moderate endure of shade, therefore, it can be extensively planted on slopeland, grass waterways ditches, hillside ditches, farm roads. Observations indicated that these conservation practices will be well protected, farmland will be decorated in green and the ecological conservation will be achieved once ground is widespreadly covered by Paspalum notatum Flugge . In addition, results of plot runoff studies also proved that both soil losses and peak flow can be reduced significantly for slopeland covered with Paspalum notatum Flugge . Paspalum notatum Flugge has been proved to be a soil conserving crop and soil building crop as well.