| 不同浓度生长抑制剂对籽粒直收夏玉米经济性状及产量的影响 |
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| 引用本文： | 陈军,张海军,韩明明.不同浓度生长抑制剂对籽粒直收夏玉米经济性状及产量的影响[J].中国农学通报,2020,36(11):15-19. |
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| 作者姓名： | 陈军 张海军 韩明明 |
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| 作者单位： | 淄博市农业科学研究院,山东淄博 255033 |
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| 基金项目： | 国家重点研发计划项目-“黄淮海东部小麦-玉米周年光温水肥资源优化配置均衡丰产增效关键技术研究与模式共建”专项“粮食丰产增效科技创新”(2017YFD0301003) |
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| 摘 要： | 试验旨在研究一种生长抑制剂对籽粒直收夏玉米‘迪卡517’品质提升和增加产量的合理浓度。以1.0 mL/kg用量‘30%胺鲜酯·乙利水剂’为标准(100%)溶剂,按6个浓度比率（25%、50%、75%、100%、150%和200%）分别试管滴定至容积相同6个喷壶,对照为清水,充分溶解试剂,对应试验处理进行叶面喷雾。通过试验,发现50%浓度处理的株高比对照降低23.0 cm,穗位降低5.0 cm,理论抗倒性趋强;该处理单穗粒重显著高于清水CK和100%以上浓度处理,说明50%浓度处理的籽粒质量优于清水对照;尽管50%浓度处理的百粒重仅低于75%浓度处理,但是出籽率是各处理间最高的;50%浓度处理的小区产量与对照差异显著。0.50 mL/kg ‘30%胺鲜酯·乙利水剂’,既合理降低了株高及穗位,又提高了籽粒质量和品质,建议应用在8.25万株/hm 2密度的玉米品种‘迪卡517’生产中。
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| 关 键 词： | 籽粒直收夏玉米 生长抑制剂 不同浓度 品质产量 影响 |
| 收稿时间： | 2019-02-28 |
Growth Inhibitors of Different Concentrations: Effect on Economic Characters and Yield of Direct-Harvesting Summer Maize |
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| Chen Jun,Zhang Haijun,Han Mingming.Growth Inhibitors of Different Concentrations: Effect on Economic Characters and Yield of Direct-Harvesting Summer Maize[J].Chinese Agricultural Science Bulletin,2020,36(11):15-19. |
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| Authors: | Chen Jun Zhang Haijun Han Mingming |
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| Institution: | Zibo Academy of Agricultural Sciences, Zibo Shandong 255033 |
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| Abstract: | The aim of the experiment is to obtain the suitable concentration of a growth inhibitor for improving the quality and yield of direct-harvesting summer maize ‘Dika 517’. The standard solvent was 1.0 mL/kg 30% diethylaminoethyl hexanoate and ethephon mixture (DHE) water agent (100%). According to 6 concentration ratios of 25%, 50%, 75%, 100%, 150%, and 200%, it was titrated into 6 spray watering pots with the same volume by the test tube, and the control treatment was water. The reagent was fully dissolved and the foliar spray was carried out corresponding to the experimental treatment. Results showed that 50% concentration treatment decreased the height of the maize plant by 23 cm, and reduced the height of ear by 5 cm, which enhanced the performance of lodging compared with the control treatment. In addition, the grain weight per ear was significantly higher than that of the control and 100% as well as above 100% treatments, which suggested that the quality of the grain of 50% concentration treatment was better than that of the control. Although the 100-grain weight of 50% treatment was only less than 75% treatment, the seed rate of 50% treatment was the highest in all the treatments. The plot yield of 50% treatment had obvious difference with that of the control. 0.50 mL/kg ‘30% DHE’ decreased the plant height and ear height reasonably, and increased the yield and quality. Therefore, it is recommended to be used in ‘Dika 517’ production under the planting density of 8.25×10 4 plant/hm 2. |
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| Keywords: | direct-harvesting summer maize growth inhibitors different concentrations quality and yield effect |
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