| 路轲,宋正国.喷施不同纳米材料对水稻幼苗磷含量的影响[J].农业环境科学学报,2020,39(1):28-36. |
| 喷施不同纳米材料对水稻幼苗磷含量的影响 |
| Effects of different sprayed nanomaterials on the phosphorus content in rice seedlings |
| 投稿时间：2019-07-25 |
| DOI：10.11654/jaes.2019-0824 |
| 中文关键词: 纳米材料 水稻 生物量 磷 |
| 英文关键词: nanomaterial rice biomass phosphorus |
| 基金项目:国家重点研发计划项目（2016YFD0800806） |
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| 摘要点击次数: 1819 |
| 全文下载次数: 1694 |
| 中文摘要: |
| 为探究喷施不同纳米材料对水稻幼苗生物量和磷含量的影响，将水稻幼苗培养在不同含磷浓度营养液中，对水稻幼苗叶片喷施不同浓度的不同纳米材料，即粒径40 nm的羟基磷灰石（nHA）、三氧化二铁（nFe2O3）、零价铁（nFe）、二氧化铈（nCeO2）和甲壳素[CH，（C8H13NO5）n]悬浊液，测定水稻地上部和根部含磷量。结果表明：在正常供磷条件下，喷施nHA、nFe2O3、nFe处理，浓度分别在200、100 mg·L-1和150 mg·L-1时，地上部生物量达到最大，根部生物量则在150、100 mg·L-1和100 mg·L-1处理时达到最高；但大部分处理不会显著提高水稻幼苗磷含量。在供磷1/2条件下，各处理均可不同程度促进水稻幼苗对磷的吸收；喷施nHA、nFe2O3、nFe、nCeO2和CH处理，分别在50、100、100、100 mg·L-1和150 mg·L-1的浓度处理时生物量达到最大；nHA、nFe2O3、nFe处理均可显著促进地上部磷含量，地上部磷含量分别在150、100 mg·L-1和150 mg·L-1处理时达到最高。研究表明：在不同浓度磷供应条件下，喷施粒径40 nm的nHA、nFe2O3、nFe、nCeO2和CH均可不同程度促进水稻幼苗生长。不缺磷条件下，nHA、nFe处理促进生物量增加明显；缺磷条件下，nHA、nFe2O3、nFe促进磷吸收效果更明显。 |
| 英文摘要: |
| In order to explore the effects of different sprayed nanomaterials on the biomass and phosphorous content of rice seedlings, rice seedlings were cultured in different phosphorous nutrient solutions with different concentrations of various types of nanomaterials, including hydroxyapatite(nHA) with particle size of 40 nm, ferric oxide(nFe2O3), zero-valent iron(nFe), ceria(nCeO2), and chitin[CH, (C8H13NO5) n] suspension, were sprayed on the leaves of rice seedlings. Under normal phosphorus supply condition, the shoot biomass reached a maximum when nHA, nFe2O3, and nFe were sprayed at concentrations of 200, 100, and 150 mg·L-1, respectively, whereas these concentrations were 150, 100, and 100 mg·L-1 for the root biomass to reach a maximum. However, most treatments did not significantly improve the phosphorus content of rice seedlings. Under the condition of 1/2 phosphorus supply, all treatments can promote the phosphorus uptake of rice seedlings to different degrees. The biomass reached the maximum when nHA, nFe2O3, nFe, nCeO2, and CH were sprayed at concentrations of 50, 100, 100, 100, and 150 mg·L-1, respectively. nHA, nFe2O3, and nFe treatments can significantly promote the shoot phosphorus content, and reach the peak content when treated with concentrations of 150, 100, and 150 mg·L-1. The study showed that nHA, nFe2O3, nFe, nCeO2 with particle size of 40 nm, and CH, sprayed with different phosphorus concentrations, can promote rice seedling growth to different degrees. With sufficient phosphorus supply, the biomass promoted by nHA and nFe treatment was found to be significant. In the absence of phosphorus, nHA, nFe2O3, and nFe can improve phosphorus absorption. |
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