多效唑(PP_(333))对花生农艺性状及产量的影响  

Effects of Paclobutrazol on Agronomical Characteristics and Its Yields of Peanut

作　　者：谭乾开[1,2] 黎华寿 陈健章 李水源 

机构地区：[1]华南农业大学农业部生态农业重点实验室,广州510640 [2]恩平市农业技术推广服务中心,广东恩平529400 [3]恩平市农业科学技术研究所,广东恩平529400

出　　处：《中国农学通报》2010年第8期132-136,共5页Chinese Agricultural Science Bulletin

基　　金：国家重点基础研究"973计划"项目(2006CB1000206);国家自然科学基金(30870413)

摘　　要：大田试验研究了喷施50～100mg/L的不同浓度多效唑处理对花生农艺性状及产量影响,表明花生初花后26天喷施多效唑对花生的生物(鲜)重、豆荚(鲜)重、株高等农艺性状有显著的影响。收获时花生鲜果重与植株生物量鲜重的直线回归方程相关性分别为:多效唑:y=0.0240+0.3919x(r=0.0402),对照:y=0.2587+0.2680x(r=0.0485);株高与生物量相关性分别为:对照y=0.0426+0.8411x(r=0.0070);多效唑:y=-0.1126+9.4824x(r=-0.0045);从对照(CK)与喷施多效唑100mg/L处理组相比,结实率从40%提高到63%,有效荚由(9.00±3.62)个/棵增加至(21.33±2.84)个/棵,理论产量由(347.22±86.82)kg/666.7m2增加到(723.08±76.38)kg/666.7m2,差异极显著。结果表明,所有施用多效唑的处理均促进干物质向荚果分配,使单株结果数及产量显著增加,而且具有明显的浓度效应。Field trials were carried out to investigate the effect of applied different concentration paclobutrazol on the growth, dry matter production in peanut in a subtropical region of south China. The paclobutrazol solutions were applied at full flowering stage of peanut. The results indicated that when 75-100 mg/L paclobutrazol was applied at blossoming stage, the growth of the main stems and branch stem were significantly inhibited, the amount of legume per plant and percentage of full legume were increased, and the peanut yield was also increased. Most of the growth parameters studied was affected by the concentration of paclobutrazol application. When the concentration of spraying paclobutrazol was increase among 0-100 mg？L-1, it would result in the significant increase of the peanut yield. The correlation analysis showed that the linear relationship between biomass and the pod yield were PP333：y=0.0240＋0.3919x（r=0.0402）,CK：y=0.2587＋0.2680x（r=0.0485）. The relationship between the plant height and the fresh biomass were CK：y=0.0426＋0.8411x（r=0.0070）, PP333y= -0.1126＋9.4824x（r= -0.0045）. The experimental results demonstrate that spraying paclobutrazol more favoured the Peanut yield compared to CK, with seed-setting rate increase from 40% to 63%,the rate of plump pod increase from 9.00±3.62 to 21.33±2.84 per ,and the theoretical yields increase from 347.22±86.82 kg/666.7m2 to 723.08±76.38 kg/666.7m2,significant difference of the contro1. Thus the yield was greatly improved by spraying paclobutrazol with 75-100 mg/l PP333.

关 键 词：多效唑(PP333) 花生 农艺性状 产量 

分 类 号：S565.2[农业科学—作物学] Q945[生物学—植物学]