| 大豆氮磷钾吸收动态及模式的研究 |
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| 引用本文： | 董钻,谢甫绨.大豆氮磷钾吸收动态及模式的研究[J].作物学报,1996,22(1):89-95. |
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| 作者姓名： | 董钻 谢甫绨 |
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| 作者单位： | 沈阳农业大学，辽宁沈阳，110161 |
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| 摘 要： | 根据２年对２个大豆品种的测定结果，大豆叶片、叶柄、茎秆、荚皮的Ｎ、Ｐ２Ｏ５、Ｋ２Ｏ百分含量随生育进程呈明显的下降趋势。籽粒中Ｎ的百分含量在成熟前２周达到最大值，尔后下降；Ｐ２Ｏ５含量比较稳定；Ｋ２Ｏ稍呈下降趋势。大豆单株的Ｎ、Ｐ２Ｏ５和Ｋ２Ｏ绝对含量的积累可用Ｌｏｇｉｓｔｉｃ曲线方程加以表达，拟合良好。大豆植株吸收各种养分最快的时间：Ｎ约在出苗后第９￣１０周，Ｐ２Ｏ５在第１０周前后，Ｋ２Ｏ约在第８
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| 关 键 词： | 大豆 氮 磷 钾 养分吸收 模式 |
| 收稿时间： | 1994-08-08 |
| 修稿时间： | 1995-03-10 |
Studies on Dynamics and Models of N, P, K Absorption in Soybeans |
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| Dong Zuan Xie Futi.Studies on Dynamics and Models of N, P, K Absorption in Soybeans[J].Acta Agronomica Sinica,1996,22(1):89-95. |
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| Authors: | Dong Zuan Xie Futi |
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| Institution: | Shenyang Agricultural University,Shenyang,110161 |
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| Abstract: | The studies were carried out with two soybean varieties in two years, the results were as follows: The nutrient percentages of N, P2O5, K2O in soybean leaf, stipe, stem, pod husk decreased obviously with the days after emergence. The N percentage in seeds was the highest two weeks before mature, and then decreased; P2O5 percentage was stable; K2O percentage decreased a little with seed development. The accumulations of N, P2O5, K2O in soybean plants could be described by Logistic curve equation. The time of the fastest nutricent absorption were that N was about 9 to 10 weeks, P2O5 around 10 weeks, K2O 8 to 9 weeks after emergence. The values of nutrient absorption for the production of 100 kg seeds were not constant, in this experiment, N was 8. 71 to 9. 29 kg, P2O5 1. 97 to 2. 47 kg, K2O 3. 24 to 3. 63 kg. |
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| Keywords: | Soybean NPK Absorption dynamics Model |
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