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| 钾肥对春玉米氮磷钾吸收动态模型及养分生产效率影响的研究 | |
| 引用本文： | 王春枝,葛海峰,姚刚,赵利梅,张胜. 钾肥对春玉米氮磷钾吸收动态模型及养分生产效率影响的研究[J]. 内蒙古农业大学学报(自然科学版), 2000, 21(Z1): 148-152 |
| 作者姓名： | 王春枝 葛海峰 姚刚 赵利梅 张胜 |
| 作者单位： | 1. 沈阳农业大学 2. 通辽市土肥站,通辽,024000 3. 包头市农技推广站 4. 内蒙古农业大学,呼和浩特,010019 |
| 摘 要： | 通过田间试验结合室内化学和回归分析,查明钾肥可显著地促进春玉米对N.P.K的吸收.建立了N.P.K吸收动态模型,根据各自的吸收模型计算,施钾肥的N.P.K最快吸收速率分别为5.6kg/hm2@d、1.04kg/hm2@d、5.03kg/hm2@d,分别出现在出苗后69d,83d,52d,均有不同程度的加快和提前.生产百公斤籽粒吸收N.P.K数量分别为2.23kg,0.38kg,1.70kg,比对照均有所提高.而N.P.K生产效率有所降低. |
| 关 键 词： | 春玉米 钾肥 NPK 吸收动态模型 生产效率 . |
| 文章编号： | 1009-3575(2000)增刊-0148-05 |
| 修稿时间： | 2000-09-10 |
STUDIES ON THE EFFECT OF POTASSIUM FERTILIZER ON DYNAMIC MODEL OF N. P. K. UPTAKE BY SPRING MZIZE AND ITS PRODUCTIVITY |
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| WANG Chu-zhi ,GE Hai-feng ,YAO Gang ,ZHAO Li-mei ,ZHANG Sheng. STUDIES ON THE EFFECT OF POTASSIUM FERTILIZER ON DYNAMIC MODEL OF N. P. K. UPTAKE BY SPRING MZIZE AND ITS PRODUCTIVITY[J]. Journal of Inner Mongolia Agricultural University(Natural Science Edition), 2000, 21(Z1): 148-152 | |
| Authors: | WANG Chu-zhi GE Hai-feng YAO Gang ZHAO Li-mei ZHANG Sheng |
| Affiliation: | WANG Chu-zhi 1,GE Hai-feng 2,YAO Gang 3,ZHAO Li-mei 4,ZHANG Sheng 4 |
| Abstract: | Through the field experiments in combination with analysis of chemistry and regressive in laboratory,we have known that N.P.K uptake by spring maize is significantly improved by potassium fertilizer and established the dynamic model of N.P.K.uptake by plant.The fastest rate of N.P.K.uptake by plant of applying potassium fertilizer is respectively 5.6,1.04,5.03 kg/ha per day,and it appeares 69,83,52 days after young plant growing out and it is sped up and ahead of time to varying degrees.The quantity of N.P.K.uptake by plant is respectively 2.23,0.38,1.70 kg to produce 100 kg kernels and they are all higher than no applying potassium fertilizer,but the productivity of N.P.K.is decreased. |
| Keywords: | Spring maize Potassium fertilizer Productivity Dynamic model of uptake Nitrogen(N.)Phosphorus(P.)Potassium(K.) |
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