摘要
采用单因素随机区组设计,研究了草坪型多年生黑麦草(LoliumperenneL.)在春季返青期施用多效唑(paclobuturazal,pp333)对其营养生长和结实性能的影响。结果表明,多效唑能有效地抑制多年生黑麦草的植株高度,增强抗倒伏能力,减少种子败育,提高结实率,增加有效分蘖,缩短叶片长度,改变生长格局;穗长和千粒重降低,落粒率降低10%,种子产量提高13 9%。
The nutrient growth and fecundity of turf-type perennial ryegrass(Lolium perenne L.)with applying paclobuturazal (pp333) at truning-green stage in spring were studied with the single-factor random block design.It was indicated that paclobuturazal could effectively control growth of perennial ryegrass,strengthen resistance to lodging,reduce abortion,improve seed rate,increase density and shorten leaf length.Shattered seed at maturity amounted to 47.5% of overall mean yield,but 52.8% of the contrast in the experiment.Paclobuturazal can increase the seed output of perennial ryegrass with 13.9%
出处
《四川草原》
2002年第4期27-30,共4页
Journal of Sichuan Grassland
