| 不同钾肥品种在水稻防早衰上的应用 |
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| 引用本文： | 叶春升,罗奇祥,李祖章,谢金水,龙丘陵,李建国,魏林根. 不同钾肥品种在水稻防早衰上的应用[J]. 江西农业学报, 2005, 17(4): 15-20 |
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| 作者姓名： | 叶春升 罗奇祥 李祖章 谢金水 龙丘陵 李建国 魏林根 |
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| 作者单位： | 江西省农业科学院,江西,南昌,330200 |
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| 基金项目： | 国家粮食丰产科技工程项目江西分项（2004BA520A04）、PPIC资助项目. |
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| 摘 要： | 以早稻品种“香两优68”为试验材料,探讨了不同钾肥品种对水稻后期光合功能衰退、叶片和根系衰老的调控效果。结果表明:钾肥均具有维持水稻功能叶片中较高的SOD活性、叶绿素含量和根系活力水平,从而延缓水稻功能叶和根系衰老的功能。硫酸钾镁肥具有比氯化钾、硫酸钾更好的延缓衰老的效果,并能明显提高水稻产量,分别比硫酸钾和氯化钾增产2.4%和2.8%。
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| 关 键 词： | 钾肥品种 水稻 衰老 产量 |
| 文章编号： | 1001-8581（2005）04-0015-06 |
| 收稿时间： | 2005-10-18 |
| 修稿时间： | 2005-10-18 |
Application of Different Potassium Fertilizer Varieties in Preventing Early Senescence of Rice |
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| YE Chun -sheng,LUO Qi -xiang,LI Zu -zhang,XIE Jin -shui,LONG Qiu -ling,LI Jian- guo,WEI Lin -gen. Application of Different Potassium Fertilizer Varieties in Preventing Early Senescence of Rice[J]. Acta Agriculturae Jiangxi, 2005, 17(4): 15-20 |
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| Authors: | YE Chun -sheng LUO Qi -xiang LI Zu -zhang XIE Jin -shui LONG Qiu -ling LI Jian- guo WEI Lin -gen |
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| Affiliation: | Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China |
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| Abstract: | The regulatory effects of different potassium fertilizer varieties on senescence of photosynthetic function,leaves and roots at late stages of rice growth were studied by using early rice "Xiangliangyou 68" as tested material.The results showed that all tested potassium fertilizer varieties could maintain higher activity of SOD in leaves,higher chlorophyll content in leaves and stronger activity of root system,therefore they could delay senescence of leaf and root of rice.Applying sulfate potassium magnesium fertilizer had better effects than applying potassium sulfate and potassium chloride in delaying senescence,increasing rice yield by 2.4% and 2.8% respectively. |
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| Keywords: | Potassium fertilizer variety Rice Senescence Yield |
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