无土结缕草草坪生产中添加保水剂的研究

以优良结缕草为繁殖材料，选用木屑为无土栽培基质，在日光温室内，将3种保水剂溶解后浸泡草茎、混入基质后播种草茎，观测试验期间耗水量和草坪苗期生长情况。结果表明，使用保水剂后能明显减少耗水量，并促进无土草坪成坪。沾根用的保水剂效果最差，大颗粒的保水剂效果其次，小颗粒的保水剂效果最佳。小颗粒保水剂的3个用量处理，20，30和40g／m^2，以40g／m^2对无土草坪的出苗效果最好，20g／m^2处理效果最差。在无土草坪生产中施用适量的保水剂是一种环保节能的草坪生产模式，减少了有土种植资源消耗，提高了水资源利用效率。

Preliminary study of adding water retaining agent in soil-free zoysiagrass turf production

Soil-free zoysiagrass turf was produced in greenhouse by using excellent zoysiagrass(Zoysia matrella),wood crumbs and three kinds of water retaining agents.The water retaining agents were mixed with wood crumbs or dissolved in water to dip zoysiagrass.The Results showed that water consumption reduced significantly and zoysiagrass turf was promoted to grow up into a soil-free zoysiagrass turf more rapidly after using the three kinds of water retaining agent.The smaller granules of water retaining agent,the better effects were achieved.However,the effect of dipping was not evident.Concerning the dosage,the more used was the better effect on seedling.It is suggested that adding water retaining agent in producing soil-free turf is a good pattern,and more water resources might be saved.