[农业]不同浓度的甲哌嗡对芝麻产量的影响.doc

不同浓度的甲哌嗡对芝麻产量的影响* 胡金和1 饶月亮2 邹旭1* 乐美旺2* 胡文秀1 颜小文2 喻凤琴1 颜廷献2 徐宝庆1 （1、南昌市农科院粮油作物所 江西 南昌 330025 ；2、江西省农科院作物所 江西 南昌 330200） 摘要：通过对甲哌嗡在黑芝麻4对真叶（苗期）时和蕾期喷施600倍和900倍溶液的不同处理试验，表明喷施甲哌嗡能提高植株的叶绿素含量，有效地控制植株生长，改善经济性状，提高产量。高浓度的效果优于低浓度，喷施两次的优于喷施一次的，苗期喷施控苗效果好，蕾期喷施的经济性状较好，在本试验条件下，在4对真叶期和蕾期分别喷施600倍甲哌嗡溶液产量最高，为1750kg/hm2，显著地高于其它处理。 关键词：甲哌嗡; 芝麻产量; 影响 Effects of Mepiquat chloride with different concentration on sesame yield HU Jin-he 1 RAO Yue-liang 2 ZOU Xu1* LE Mei-wang, 2* HU Wen-xiu1 YAN Xiao-wen, 2 YU Feng-qin1 YAN Ting-xian2 XU Bao-qin1 （1. Istitute of the Grain and Oil Crops , Academy of Agricultural Sciences Nanchang, Nanchang 330025, 2. Crops Research Institute, Jiangxi Academy of Agricultual Sciences, Nanchang 330200) Abstract: The black sesame were treated with (600?) or (900?) mepiquat chloride at 4 pairs of main leaves and budding phase, the results showed that mepiquat chloride could increase plant chlorophyll contents, effectively control plant growth, improve the economic traits and ultimately increase yield. The effects of mepiquat chloride with high concentration was superior to the low concentration and the spraying twice was better than spraying once. Spraying at seedling stage could effectively control seedlings, spraying at budding stage had better economic traits. And spraying (600?) mepiquat chloride at the 3-4 true leaf and budding phase could result in highest yield of 1750kg/hm2, significantly higher than other treatments. Keywords: mepiquat chloride, sesame yield, effect 甲哌嗡为新型植物生长调节剂，对植物有较好的内吸传导作用，能促进植物的生殖生长；抑制茎叶疯长，控制侧枝塑造理想株型，提高根系数量和活力，使果实增重，品质提高。广泛应用于棉花、小麦、水稻、花生、玉米、马铃薯、葡萄、蔬菜、豆类等作物，商品名称为缩节胺、助壮素，通用名称为甲哌嗡。孙呜等研究指出对播种早、水肥充足，密度偏大，有旺长趋势的芝麻，分别于1—2对真叶和3—4对真叶期，每公顷用40%助壮素，30L对225kg（类似的计量单位，建议直接用kg等表达），均匀喷雾芝麻茎叶，能缩短节间距，增加根颈粗，施400mg/L多效唑溶液，并在4对真叶时喷施600倍的缩节胺溶液，提高蒴果数[1]。诸葛龙等研究表明芝麻在4—6片真叶，定植期、始花期分别喷施33倍或50倍25%缩节胺水剂，控苗和增产效果明显[2]，胡金和等研究表明在2对真叶时喷施400mg/L多效唑溶液，并在4对真叶时喷施600倍的缩节胺溶液，控 基金项目：农业部公益性行业科研专项（nyhyzx07-15-3）、国家芝麻产业技术体系建设（nycytx-20-1-0