| 烤烟施肥中氮肥分配比例的研究 |
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| 引用本文： | 彭世逞,张忠.烤烟施肥中氮肥分配比例的研究[J].西南科技大学学报(哲学社会科学版),1998(3). |
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| 作者姓名： | 彭世逞 张忠 |
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| 作者单位： | 西昌农业高等专科学校!四川西昌615013 |
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| 摘 要： | 采用Scheffe提出的单形重心设计，研究了烤烟在紫潮沙泥土上，施纯氮105kg／hm2的条件下，烟叶产值与基肥、小压肥、大压肥3次施氮比例之间的数学模型。通过计算机模拟寻优获得最高产值为9710．40元／hm2，其3次施氮最佳比例为0．45:0．30:0．25，产值超过9300元/hm2的方案共计75套，其优化配比为0．458:0．319:0．223。
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| 关 键 词： | 烤烟 氮肥 比例 数学模型 |
A Study of the Ratio of Nitrogen Application to Flue-Cured Tobacco |
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| Peng Shicheng, Zhang Zhong.A Study of the Ratio of Nitrogen Application to Flue-Cured Tobacco[J].Journal of Southwest University of Science and Technology,1998(3). |
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| Authors: | Peng Shicheng Zhang Zhong |
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| Abstract: | With the method of design of centre of gravity of single shape by H Scheffe, we have established the mathematical model of the ratio of nitrogen application 3 tirnes to flue-cured tobacco, under topdressing, 1 05. 00 kg/hm2N during the growth and development periods. Chosen by computer, the best ratio of the basic,the second and the third applications of nitrogen fertilizer to fluecured tobacco is 0. 45: 0. 30: 0. 25, the highest output value is 9710. 40 /hm2. The schemes of the output value over 9300 /hm2are 75 sets. The weighted arithmetic mean of ratio of the three applications is 0. 45: 0. 319: 0.223. |
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| Keywords: | flue-cured tobacco nitrogen ratio mathematical model |
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