施肥频率对夏季粤选1号匍匐翦股颖果岭草生长影响

Effects of Fertilization Frequency on Growth Character in Green-turf of Agrostis stolonifera Cultivar Yuexuan No.1 in Summer

粤选1号匍匐翦股颖果岭草坪7月30日—9月30日期间每2～10d施复合肥(N:P:K=15:15:15)11.11g/m2,测定草坪草生长特性,结果表明,施肥频率高,促进草坪草生长,而每2d、4d、6d施肥1次,草屑总氮高,草坪质量下降,每2d施肥1次,草徒长,多次修剪后植株枯死。每8d施肥1次,草坪草生长均匀,色泽深,病害发生少,草坪质量高。每10d施肥1次,草生长量低。

The growth character in summer green-turf （July 30-September 30） of Agrostis stolonifera cultivar Yuexuan No. 1 under different fertilization frequency were studied through 1-9 days interval adding compound fertilizers （N：P：K=15：15：15）11.11g/m^2. The results showed that high fertilization frequency increased the growth of Yuexuan No.l, and increased total N content in clipping of Yuexuan No.1 in green-turf adding compound fertilizer every 2d, 4d and 6d, and decreased the quality in green-turf, while treatment with every 2 days fertilization has excessive growth effect on Yuexuan No.1 in green-turf, and the grass dead after close mowing. There has high turf-quality with even erect growth rate, green color, almost no disease in green-turf of Yuexuan No.1 treated with every 8 days fertilization, and turf-green with every 10 days fertilization has low erect growth rate and low clipping biomass.