4种植物生长延缓剂对浚单20的矮化抗倒效应  

Dwarfing and Lodging-resistant Effects of Four Plant Growth Retardants on Maize Cultivar Xundan 20

作　　者：刘天学[1] 赵春玲[1] 常建智 李潮海[1] 

机构地区：[1]河南农业大学农学院,河南郑州450002 [2]河南省浚县农业科学研究所,河南浚县456284

出　　处：《江西农业学报》2010年第12期8-10,共3页Acta Agriculturae Jiangxi

基　　金：河南省重大科技专项(081100110400)

摘　　要：在大田试验条件下,研究了金得乐、稀世宝、多效唑和矮大棒4种植物生长延缓剂对浚单20的矮化抗倒效应.结果表明,在60000、67500、75000、82500、90000株/hm2 5个种植密度水平于6～7片展开叶喷施4种植物生长延缓剂和16～17片展开叶喷施稀世宝均能显著降低浚单20株高,倒伏率显著下降;而对穗行数、行粒数和千粒重等产量性状影响较小,其变异主要源自密度的变化.在6～7片展开叶喷施多效唑和16～17片展开叶喷施稀世宝具有一定的增产效应;在6～7片展开叶喷施金得乐籽粒产量与对照基本持平,喷施稀世宝和矮大棒则略有减产.The dwarfing and lodging-resistant effects of four plant growth retardants(Jindele,Xishibao,Paclobutrazol and Aidabang) on maize cultivar Xundan 20 were studied through field tests in 2009.The results showed that spraying four plant growth retardants at the stage of 6~7 unrolling leaf and spraying Xishibao at the stage of 16~17 unrolling leaf all could significantly reduce the plant height and lodging percentage of Xundan 20 at the planting densities of 60000,67500,75000,82500 and 90000 plants/hm2.There were no significant differences in yield characters such as rows per ear,grains per row and 1000-grain weight among different treatments,which decreased along with the increase of planting density.In comparison with the control,the grain yields were increased slightly by spraying Paclobutrazol at the stage of 6~7 unrolling leaf and spraying Xishibao at the stage of 16~17 unrolling leaf.There was no significant difference in grain yield between spraying Jindele and the control,while the grain yields were decreased by spraying Xishibao and Aidabang at the stage of 6~7 unrolling leaf.

关 键 词：植物生长延缓剂 矮化 抗倒 增产效应 Plant Growth 喷施 多效唑 籽粒产量 种植密度 试验条件 产量性状 穗行数 千粒重 株高 粒数 结果 减产 倒伏 大田 变异 

分 类 号：S[农业科学]