植物生长延缓剂对杂交狗牙根草坪草生长特性的影响  

Effect of plant growth retardants on growth characters of the lawn bermudan grass

作　　者：金小马[1] 杨知建[1] 余清[1] 黄燕湘[1] 

机构地区：[1]湖南农业大学农学院,湖南长沙410128

出　　处：《草业科学》2007年第6期90-95,共6页Pratacultural Science

基　　金：湖南省外国专家局(S20044300003);湖南农业大学(2002-01)

摘　　要：研究了烯效唑、矮壮素、缩节胺、比久4种植物生长延缓剂对暖季型草坪草交杂狗牙根生长特性的影响。结果表明：烯效唑处理狗牙根的最适浓度为50～100 mg/L,用药量以200 mL/m^2为宜,使狗牙根生长速度减慢,节间缩短,叶片加宽,叶绿素含量增加,叶色加深。100～400 mg/L浓度的矮壮素和缩节胺及500～2 000 mg/L浓度的比久处理能不同程度地抑制狗牙根的生长,抑制作用随浓度增加而加强,但与对照相比差异不显著,对狗牙根密度、叶色、叶绿素、叶长、叶宽等品质无显著影响。The effect of the four plant growth retardants, uniconazloe, chlormequat, mepiquat and B9 on growth characters of a warm-season lawn grass, Bermudan grass were investigated. Results showed that the optimum concentration and rate of unicomazole were 50-100 mg/L and 200 mL/m^2, respectively. On such treatment the Bermudan grass grew more slowly, had shorter internodes, and wider and greener leaves with higher chlorophyll content. Treatments of chlormequat and mepiquat, both at 100-400 mg/L, and B9 at 500-2 000 mg/L inhibited growth of the Bermudan grass, the degree of inhibition increasing with the concentration used. However, these treatments had no obvious effects on plant density, leaf color, size, and chlorophyll content of Bermudan grass.

关 键 词：植物生长延缓剂 杂交狗牙根 生长特性 

分 类 号：S688.4[农业科学—观赏园艺]