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| 外源纳米硒和亚硒酸钠对魔芋生长的影响 |
| Effects of Exogenous Nano-Selenium and Sodium Selenite on Growth of Amorphophallus konjac |
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| DOI： |
| 中文关键词: 花魔芋 农艺性状 纳米硒 化学硒 NaSeO3 |
| 英文关键词:Amorphophallus konjac Agronomic traits Nano selenium Chemical selenium NaSeO3 |
| 基金项目:陕西省科技厅项目(2025-JC-QN-1597,2025NC-YBXM-029)；陕西省教育厅高校工程中心项目(24JR002,25JR001);安康学院校内专项(2023AYKCYZ05,2024AYXNZX04, 2023JCRC01)。 |
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| 中文摘要: |
| 以盆栽花魔芋为试验材料，分析不同浓度化学硒NaSeO3和生物纳米硒SeNPs对魔芋农艺性状、病虫害发生率及产量的影响。结果表明，化学硒和纳米硒对魔芋的株高和地径影响不显著。化学硒处理中，5 mg/kg、25 mg/kg和125 mg/kg NaSeO3处理的魔芋软腐病发病率均较对照增加100%，但125 mg/kg、200 mg/kg NaSeO3处理的魔芋虫伤率均较对照降低66.7%。5 mg/kg纳米硒处理的魔芋软腐病发病率和虫伤率较对照分别降低100%和66.7%。不同浓度纳米硒处理的魔芋鲜质量均高于相同浓度的化学硒处理。5 mg/kg纳米硒处理显著提高了魔芋球茎鲜质量和根茎个数，其分别较对照显著增加 41.2%和46.2%。综上所述，纳米硒较化学硒对魔芋的防病促生效果更好，其中5~125 mg/kg纳米硒处理能够明显促进魔芋生长发育。 |
| 英文摘要: |
| Amorphophallus konjac is s an important economic crop, and appropriate selenium application may enhance its growth and resistance to diseases and insect damage.Potted A. konjac plants were used in this study to investigate the effects of different concentrations of chemical selenium (NaSeO3) and biosynthesized nano-selenium (SeNPs) on agronomic traits, disease incidence, insect damage rate, and yield. The results showed that neither chemical selenium nor nano-selenium had significant effects on plant height or basal stem diameter. Under chemical selenium treatments, the incidence of soft rot at 5, 25, and 125 mg/kg NaSeO3 was 100% higher than that in the control, whereas the insect injury rate at 125 and 200 mg/kg NaSeO3 was 66.7% lower than the control values. Under the 5 mg/kg nano-selenium treatment, the incidence of soft rot and the insect injury rate were 100% and 66.7% lower than the control values, respectively. At each concentration tested, the fresh weight of konjac corms under nano-selenium treatment was higher than that under the corresponding chemical selenium treatment. In addition, the 5 mg/kg nano-selenium treatment significantly increased fresh corm weight and rhizome number, representing increases of 41.2% and 46.2% over the control, respectively. In conclusion, nano-selenium exhibits superior disease-preventive and growth-promoting effects compared with chemical selenium, and 5~125 mg/kg nano-selenium significantly promotes the growth and development of konjac. |
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