【作者】 苟文龙； 何光武； 张新跃；

【Author】 GOU Wen-long HE Guang-wu ZHANG Xin-yue (Sichuan grassland work station, Chengdu 610041, china)

【机构】 四川省草原工作总站；

【摘要】 本文研究了多花黑麦草拔节初期、孕穗初期喷施不同浓度(90mg/L、180mg/L、270mg/L、540mg/L)的多效唑对其生长及种子生产性能的影响,结果表明:多效唑处理能降低植株高度,促进分蘖,缩短节间长度,对生育期、种子的千粒重影响较小,而对种子产量的影响差异显著(p<0.01)。在孕穗初期喷施540mg/L多效唑有效地防止了倒伏,使得种子产量最高达到806.3kg/hm2,比对照提高了35.8%。更多还原

【Abstract】 The effect of paclobutrazol on growth and seed yield of Lolium multiflorum at jointing and booting stages at rate of 90, 180, 270 or 540mg/L was studied in this paper. The results indicated that the plant height was decreased, the tillers were promoted effectively and the internodes were shortened by the treatment. The seed weight and mature time was little affected by palclobutrazol application, But significantly affected the seed yield. Application rate of paclobutrazol (less than 540mg/L) at booting stages effectively prevented lodge and obtained the highest seed yield reached 806.3kg/hm2,35.8percent more than CK.更多还原