| 低温条件下玉米对磷素吸收的研究 |
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| 引用本文： | 王树禹,李文阁,刘大森,余肇福,张鹏.低温条件下玉米对磷素吸收的研究[J].核农学报,1991,5(1):7-12. |
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| 作者姓名： | 王树禹 李文阁 刘大森 余肇福 张鹏 |
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| 作者单位： | 东北农学院,东北农学院,东北农学院,东北农学院,东北农学院 哈尔滨 150030
,哈尔滨 150030
,哈尔滨 150030
,哈尔滨 150030
,哈尔滨 150030 |
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| 摘 要： | 用放射性核素~(32)P示踪研究表明,在5—25℃范围内,玉米苗期对磷的吸收随温度升高而增加,呈极显著正相关,相关系数为0.9747。苗期叶面喷磷能促进根系对磷的吸收,提高玉米的抗寒能力。喷磷后0.5小时遇50mm/h降雨,磷素冲刷率为42％,一般不需要重新喷磷。
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| 关 键 词： | 玉米 低温 磷吸收 ~(32)P |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31 |
~(32)P STUDY ON THE ABSORPTION OF PHOSPHORUS BY CORN UNDER LOW TEMPERATURE |
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| Abstract: | It was found that the absorption of phosphorus,by corn increased when temperature increased from 5℃ to 25℃ during seedling stage;amou-nt of 32P absorption was related to the temperature (correlation coeffici-ent was 0.9747).Spraying leaves with phosphorus promoted the absorption of phosphorus by roots.42% of 32P was washed out by rain at the rate of 50mm/h after half hour of spraying leaves with 32P.Usually spraying leaves again was unnecessary. |
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| Keywords: | corn low temperature phosphorus absorption 32P |
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