施肥对杂交结缕草成坪期草坪质量综合评价

Comprehensive Evaluation of the Effect of Fertilizer Application on Hybrid Zoysia Quality during Turf Stage

通过杂交结缕草田间肥效试验,观察了不同施肥处理对草坪质量和植株生长的影响。结果表明,合理施肥可明显改善草坪的质量和提高草坪的生长速度。随着氮肥用量的增多,草坪的颜色逐渐加深,叶绿素含量逐渐升高,草坪的盖度和密度逐渐加大,植株生物量及分蘖数增加,枝条长度增长。采用灰色关联分析方法,在供试土壤条件下,施N6g·m^(-2),P_2O_54g·m^(-2)的草坪质量综合评价最好,成坪最快(成坪时间为93d)。

Growth characteristics and fertilizer application effect on turfgrass quality of hybrid strain of zoysia tenuiflia wilid.×zoysia tenuifolia steud. were observed and evaluated in this study. The preliminary results showed that N could improve turfgrass quality and growth rate. With the increase of N application, the colour of turfgrass became darker, the content of chlorophyll increased, the coverage density, density, biomass, number of tiller and the length of stolon also increased. The correlation analysis with the grey systematic theory showed that Treatment 11 was the best one among 16 treatments under the experimental condition, i.e. 6 g·m-2 N and 4 g·m-2 P2O5 only could create best effects on turfgrass establishment. Time needed for turfgrass establishment in Treatment 11 was the shortest with only 93 days.