| 不同产量水平玉米氮素积累态势的研究 |
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| 引用本文： | 翟立普,刘巍巍,曹国军. 不同产量水平玉米氮素积累态势的研究[J]. 吉林农业科学, 2011, 36(2) |
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| 作者姓名： | 翟立普 刘巍巍 曹国军 |
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| 作者单位： | 1. 辽宁农业职业技术学院,辽宁营口,115009
2. 吉林农业大学资源与环境学院,长春,130118 |
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| 摘 要： | 不同产量水平玉米平均单株氮素积累量(Y)依出苗后各采样期天数(x)的增长符合不对称的"S"型曲线,可用Logistic方程Y=k/1+e(a-bx)加以描述,并可根据该方程求得其最大增长速率及其出现日期。各处理中,均以高产处理获得了相对较大的养分吸收最大速率和较高的养分吸收总量,而不施肥处理的养分吸收最大速率和养分吸收总量均小于其它处理。不同产量水平玉米叶片、茎秆氮素积累速度均呈现出前期慢、中期快、后期慢的积累规律,在不同产量水平玉米氮素积累量方面,叶片、茎秆均是高产处理>平产处理>不施肥处理,并且3个处理之间在积累量上有比较明显差别。
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| 关 键 词： | 氮素 玉米 Logistic方程 |
Studies on the Dynamic of Nitrogen Accumulation in Corn in Different Yield Treatments |
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| ZHAI Li-pu,LIU Wei-wei,CAO Guo-jun. Studies on the Dynamic of Nitrogen Accumulation in Corn in Different Yield Treatments[J]. Journal of Jilin Agricultural Sciences, 2011, 36(2) |
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| Authors: | ZHAI Li-pu LIU Wei-wei CAO Guo-jun |
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| Affiliation: | ZHAI Li-pu1,LIU Wei-wei1,CAO Guo-jun2(1.Liaoning Agricultural College,Yingkou 115009,2.College of Resources and Environmental Sciences,Jilin Agricultural University,Changchun 130118,China) |
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| Abstract: | The average N accumulation quantity(Y) of every corn plant in different yield treatments increased with the days(X) of each sampling stage,which can be described with the equation of Logistic Y=K/1+e(a-bx),moreover the highest rate of increase and the day of emerge can be calculated from the equation.The highest rate of nutrient absorption and the total quantity of nutrient absorbed was in the high yield treatment.The rate of nutrient absorption and the total quantity of nutrient absorbed was the least in n... |
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| Keywords: | Nitrogen Corn Logistic equation |
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