| 拔节水对春玉米氮磷钾吸收动态模型及肥料利用率影响的研究 |
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| 引用本文： | 赵继文,高翔,赵利梅,张胜. 拔节水对春玉米氮磷钾吸收动态模型及肥料利用率影响的研究[J]. 内蒙古农业大学学报(自然科学版), 2000, 21(Z1): 131-135 |
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| 作者姓名： | 赵继文 高翔 赵利梅 张胜 |
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| 作者单位： | 1. 内蒙古绿色食品办公室,呼和浩特,010010
2. 内蒙古农业大学,呼和浩特,010019 |
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| 摘 要： | 通过田间试验结合化学分析和生物统计,查明了拔节水增产的营养基础包括显著地提高N、P、K在体内的浓度,促进各个生育时期N、P、K的累积吸收量,使N、P、K的最大吸收量分别提高11%,12%,6%;N、P、K最快吸收速率分别提高8%,25%,14%.最快吸收速率出现时间分别提前4d,5d,15d;使N、P、K的生产效率分别提高2.5%,1.9%,7.3%;使N、P、K化肥利用率分别提高5.0,5.0,12.7个百分点.
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| 关 键 词： | 春玉米 拔节水 氮磷钾 吸收动态模型 利用率 |
| 文章编号： | 1009-3575(2000)增刊-0131-05 |
| 修稿时间： | 2000-10-10 |
THE EFFECT OF WATER AT JOINTING STAGE ON THE DYNAMIC MODEL OF N. P. K. UPTAKE BY SPRING MAIZE AND UTILIZATION RATE OF FERTILIZER |
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| ZHAO Ji-wen ,GAO Xiang ,ZHAO Li-mei ,ZHANG Sheng Office of Green Food,Inner Mongolia Agricultbural Department,Huhhot , Inner Mongolia Agricultural University,Huhhot ). THE EFFECT OF WATER AT JOINTING STAGE ON THE DYNAMIC MODEL OF N. P. K. UPTAKE BY SPRING MAIZE AND UTILIZATION RATE OF FERTILIZER[J]. Journal of Inner Mongolia Agricultural University(Natural Science Edition), 2000, 21(Z1): 131-135 |
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| Authors: | ZHAO Ji-wen GAO Xiang ZHAO Li-mei ZHANG Sheng Office of Green Food Inner Mongolia Agricultbural Department Huhhot Inner Mongolia Agricultural University Huhhot ) |
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| Affiliation: | ZHAO Ji-wen 1,GAO Xiang 2,ZHAO Li-mei 2,ZHANG Sheng 2 1 Office of Green Food,Inner Mongolia Agricultbural Department,Huhhot 010010, 2 Inner Mongolia Agricultural University,Huhhot 010019) |
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| Abstract: | Through the field experiments in combination with chemical analysis in laboratory and biological statistics,the nutrent basis of increasing yield by water at jointing stage were made clear and the results are as follows. The consistency of N.P.K. in plant is significantly increased and the quantity N.P.K.uptake and accumulation is improved at different growth and development stage.The maximum quantity of N.P.K.uptake is respectively increased by 11,12,6 per cent.The fastest rate of N.P.K.uptake is respectively increased by 8,25,14 per cent and its time appeared is earlier 4,5,15 days.The N.P.K.productivity is increased by 2.5,1.9,7.3 per cent and the utilization rate of chemical fertilizer is increased by 5.0,5.0,12.7 per cent,respectively. |
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| Keywords: | Spring maize Water at jointing stage Utilization rate Nitrogen(N.)Phosphorus(P.)Potassium(K.) Dynamic model of uptake |
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