| 冬小麦氮磷配合施肥联合效应的生理基础 |
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| 引用本文： | 王焘宽,马秀忠,郭全为,何俊英,郭成金.冬小麦氮磷配合施肥联合效应的生理基础[J].华北农学报,1987(2). |
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| 作者姓名： | 王焘宽 马秀忠 郭全为 何俊英 郭成金 |
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| 作者单位： | 天津师范大学生物系 天津
(王焘宽，马秀忠，郭全为，何俊英)，天津师范大学生物系 天津(郭成金) |
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| 摘 要： | 本文在冬小麦氮磷钾经济合理用量和适宜配比的研究条件下,探讨了氮磷配合施肥联合效应的生理基础.结果表明:在缺氮少磷的土壤上如果单纯施氮或单施磷植株均生长不好,这是因为单氮条件下植株首先磷不足,核酸含量低,磷代谢受阻.氮虽被吸收并引起硝酸还原酶活性增高,但蛋白氮含量较低,说明缺磷又影响氮代谢;单磷条件下植株首先氮不足,氮代谢水平低.虽然磷可被吸收,但核酸含量不高,也反映缺氮影响磷代谢;只有氮磷合理配合施用,植株不同形态含氮磷化合物数量和核酸与蛋白质含量都增高,这时氮磷比例协调,氮磷代谢正常,从而营养机能好,植株生长健壮,产量高并表现出联合效应.
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PHYSIOLOGICAL FOUNDATION OF COMBINING EFFECT OF FERTILIZATION OF N-P COMBINATIONS ON WINTER WHEAT |
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| Wang Daokuan Ma Xiuzhong Guo Quanwei He Junying GuoChengjin.PHYSIOLOGICAL FOUNDATION OF COMBINING EFFECT OF FERTILIZATION OF N-P COMBINATIONS ON WINTER WHEAT[J].Acta Agriculturae Boreali-Sinica,1987(2). |
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| Authors: | Wang Daokuan Ma Xiuzhong Guo Quanwei He Junying GuoChengjin |
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| Abstract: | The study discussed the physiological foundation of supplementary effect for fertilization of N-P combinations in winter wheat, which base on a regimen of economic and rational fertilizations with that appropriate ratio of N.P. K. elements. The result shows that if N or P fertilizer applies alone in the soil of N-P deficiency, the plants grow poorly. Because of, when N fertilizer applied alone, the P deficiency appeared in plants firstly , the content of nucleic acid was lower and inhibited the P metabolism. Even though the N was absorbed and it results in the natrate reductase increased, the content of protein- N was lower. It indicated the P deficency also effected the N- metabolism in plants. On the other hand, when P fertilizer applied alone, the N deficiency appeared in plants firstly, while the N-metabolism was maintained at a low level. Though the P was absorbed, the content of nucleic acid was low. It indicated the N- deficency affected the P-metabolism in plants.Only in the status, when the N and P fertilizer was applied by combination of rational rate and ratio, the contents of different form of N and P compounds involved the nucleic acid and protein both were higher. And only at that time, the N: P ratio was a coordinative proportion, the N and P metabolism was maintained at a normal level. Thus the function of N- P nutriets was maintained well. The plants were vigorous and high yield will be attained. |
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| Keywords: | Winter wheat Nitrogen nutrition Phosphorus nutrition Combining effect |
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