【摘要】 以冷季型草坪草纳苏草地早熟禾(Pao pratensis)为对照,用冷冻返青法和电解质渗漏法测定了四种暖季型草坪草(切尼普通狗牙根草 Cynodon dactylon、马尼拉草 Zoysia matrella、日本结缕草 ZoysiaJaponica 和野牛草 Buchloe dactyloides)在冬季最大抗寒能力,获得了各草种的临界致死温度指标:草地早熟禾为-19.5℃～-22℃,野牛草为-18.5℃左右,日本结缕草为-10.5℃～-11.5℃,狗牙根草和马尼拉草为-8℃～-9℃。同时,结合气象资料对各草种在北京地区越冬的可能性进行了分析。更多还原

【Abstract】 Both electrolyte leakage and regrowth tests were used to estimate the lethal low temperature(LT50)of four kinds of warm-season turfgrasses(Chenne common bermudagrass Cynodon dactylon,manilagrass Zoysia matrella,Japanese lawngrass Zoysia japonica,Bufflo- grass Buchloe dactyloides)with Nassau K.Bluegrass(Pao pratensis),a kind of cool-season turfgrasses,taking as the contrast variety.The main results are as follows:the LT50 of P. pratensis,-19.0～-22.0℃;B.dactyloides,-18.5℃;Z.japonica,-10.5～-11.5 ℃;Z.matrella and C.dactylon,-8.0～-9.0℃.Based on the test result above and the weather record,the possibility of winter survival of each variety of turfgrass in Beijing were also analyzed.更多还原