| 增温、高温对不同种植方式下水稻主要营养元素吸收的影响 |
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| 引用本文： | 韩笑,崔晓艺,刘弘毅,黄丽芬.增温、高温对不同种植方式下水稻主要营养元素吸收的影响[J].中国农学通报,2019,35(25):1-7. |
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| 作者姓名： | 韩笑 崔晓艺 刘弘毅 黄丽芬 |
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| 作者单位： | 扬州大学农学院 |
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| 基金项目： | 国家重点研发计划“粮食丰产增效科技创新”重点专项2017 年度项目“水稻生产力对气候变化的响应机制及丰产栽培途径” (2017YFD0300102)。 |
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| 摘 要： | 以江苏省两个高产水稻品种‘南粳9108’和‘南粳46’为实验材料，模拟机插秧和机械化直播栽插方式，研究增温、高温对不同种植方式下水稻主要营养元素N、P吸收的影响。于始穗期在人工气候室中进行常温、增温和高温处理15天，分析穗后水稻不同器官N、P含量的动态变化。结果表明，增温、高温处理显著增加了水稻各器官N、P含量，高温处理下各器官氮含量的变化幅度普遍大于增温处理，在相同增温处理下，各器官N含量的升高幅度表现为茎>叶>穗。高温与增温处理下P含量的变化幅度差异不大。抽穗期至成熟期，在相同种植方式和增温处理下，与常温对照相比，水稻各器官N、P含量升高幅度在品种间存在差异，‘南粳46’比‘南粳9108’对气候变化的耐受性更强。在相同温度处理和品种条件下，直播条件下水稻N、P由茎叶至穗的转运效率普遍高于移栽条件。该研究为未来气候变化下水稻安全生产提供理论依据。
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| 关 键 词： | 大型底栖动物 大型底栖动物 功能摄食类群 生态系统 健康评价 湟水河 土地利用类型 |
| 收稿时间： | 2019-03-21 |
Increasing Temperature and High Temperature Affect the Absorption of Main Nutrients in Rice Under Different Planting Patterns |
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| Abstract: | This study aims to provide a basis for the safe production of rice under future climate change. Two high-yield rice varieties‘Nanjing 9108’and‘Nanjing 46’in Jiangsu Province were chosen as experimental materials, machine-transplanted seedling and mechanized direct seeding were simulated, and the effects of increasing temperature and high temperature on the main nutrients N and P in rice under different planting patterns were explored. At the beginning of the heading stage, normal temperature, increasing temperature and high temperature were conducted for 15 days in the phytotron, the dynamic changes of N and P contents in different organs of rice were analyzed. The results showed that increasing temperature and high temperature treatments significantly increased N and P contents in various organs of rice. The variation of N content in
various organs under high temperature treatment was generally greater than that of increasing temperature treatment. Under the same increasing temperature treatment, the increase of N content in each organ was in the order of stem>leaf>ear. There was no significant difference in the change of P content between high temperature treatment and increasing temperature treatment. From the heading stage to the maturity stage, under the same planting pattern and increasing temperature treatment, compared with the normal temperature treatment, the increase of N and P contents in different organs of rice differed between the two tested varieties, and the tolerance to climate change of‘Nanjing 46’was greater than that of‘Nanjing 9108’. Under the same temperature treatment and variety, the transport efficiency of N and P from stem to leaf under direct seeding was higher than that under transplanting. |
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