种植草坪覆土试验研究

采用多因素随机区组试验法，进行多草种、覆盖不同厚度及不同土类的草坪种植试验研究，经观测其出苗率和方差统计分析后认为，影响草种出苗率的主要因素为草种的品种；在同样覆盖厚度下，覆盖的所有土壤类型都表现出大粒草种的出苗率较小粒草种的出苗率要高；要达到50％以上的出苗率，不论覆盖何种土壤，覆盖厚度以0．5cm最好，大粒草种覆土厚度应小于3．0cm；中粒草种覆土厚度应小于1．0cm，小粒草种覆土厚度应小于0．55cm；覆盖的土壤类型以沙壤土最好，粘壤土次之，风沙土较差，漏沙土最差。

Turf establishment with soil covering

An experiment involved plant species, soil types and soil covering thickness with randomized block design was carried out. The results showed that the major factor which affected emergence rate was plant species. Big size seeds had higher emergence rate than the small ones under the same covering thickness or any covering soil. 0.5 cm soil covering thickness could obtain 50% above emergence rate whatever soil types were covered. The thickness of soil covering for big, medium and small size seeds was less than 3.0 cm, 1.0cm and 0.55 cm, respectively. The optimum soil type was sandy loam soil, followed by clay loam, sandy soil.