植物生长调节剂对高羊茅草坪质量的影响

Effects of Plant Regulator on the Turf Quality of Tall Fescue.

探讨了喷施不同浓度的矮壮素和一定浓度的多效唑对建植五年的高羊茅草坪质量的影响。结果表明，施用矮壮素可延缓高羊茅的生长速度，随着浓度的增加延缓作用加强，高羊茅的地下生物量及抗病性随矮壮素浓度增加而提高，低、中浓度的矮壮素改善了高羊茅的颜色、整齐度，随着浓度增加，这种作用由促进转为抑制，矮壮素以２００μｇ／ｇ 浓度为宜；施用多效唑可延缓高羊茅的生长速度，促进地下生物量积累，增强抗病性，但抑制分蘖，对颜色、整齐度有伤害作用。

The effects of CCC with different concentrations and PP333 with a given concentration on quality of the tall fescue turf which had been established for five years were studied in Science Garden of China Agricultural University. It was showed that appling CCC can reduce the tall fescue turf growth rate. With the increasing of the CCC concentrarion, the tall fescue turf growth rate decreased intensitively, and the tall fescue turf underground biomass and disease resistance improved intensitively. Lower and middle concentrations of CCC improved the tall fescue turf greenness and uniformity, and high concentrtion of CCC inhibited the greenness and uniformity. Using 200μg/g CCC was better for tall fescue turf quality. Appling PP333 can reduce the tall fescue turf growth rate also, and improve underground biomass and the disease resistance, restrain tillering, and harm for the turf greenness and uniformity.