| 蓝茎冰草种子产量与施氮量和密度互作的模型分析 |
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| 引用本文： | 王佺珍,韩建国,周禾,刘富渊,仲勇.蓝茎冰草种子产量与施氮量和密度互作的模型分析[J].草地学报,2006,14(2):99-105. |
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| 作者姓名： | 王佺珍 韩建国 周禾 刘富渊 仲勇 |
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| 作者单位： | 1. 西北农林科技大学动物科技学院草业科学实验室, 陕西, 杨凌, 712100;2. 中国农业大学草地研究所, 北京, 100094;3. 成都大业国际投资股份有限公司甘肃总部, 甘肃, 酒泉, 735009 |
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| 基金项目： | 西北农林科技大学校科研和教改项目
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引进国际先进农业科技计划(948计划) |
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| 摘 要： | 通过3因素5水平二次通用正交旋转组合设计方案,建立回归模型,进行解析、寻优和频数分析。结果表明:各试验因素对蓝茎冰草(Pascopyrum smithii)种子产量影响的大小顺序为施氮量(X2)>植株密度(X1)>喷施PP 333(X3);施氮量与植株密度的互作效应对种子产量的作用为协同效应;同时得出了3因素对种子产量的优化配比方案:植株密度429.4~450×104株/hm2,施氮量160~164.9kg/hm2,喷施PP 333量0.197~0.233 a.i.kg/hm2。
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| 关 键 词： | 蓝茎冰草 种子产量 氮肥与密度 互作效应 模型分析 |
| 文章编号： | 1007-0435（2006）02-0099-07 |
| 收稿时间： | 2005-06-27 |
| 修稿时间： | 2005-06-272006-03-16 |
Coupling Effects of Applied Nitrogen, Planting Density on Western Wheatgrass Seed Yield by Model Analysis |
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| WANG Quan-zhen,HAN Jian-guo,ZHOU He,LIU Fu-yuan,ZHONG Yong.Coupling Effects of Applied Nitrogen, Planting Density on Western Wheatgrass Seed Yield by Model Analysis[J].Acta Agrestia Sinica,2006,14(2):99-105. |
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| Authors: | WANG Quan-zhen HAN Jian-guo ZHOU He LIU Fu-yuan ZHONG Yong |
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| Institution: | 1. Laboratory of Grassland Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China;2. Institute of Grassland Science, China Agricultural University, Beijing, 100094, China;3. Gansu Branch of Chengdu Daye International Interest Co.Ltd, Jiuquan Gansu, 735009, China |
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| Abstract: | Using a three factors orthogonal experimental design,a model for analysis of coupling effects of applied nitrogen,plant density and PP333 application on seed yield in western wheatgrass,Pascopyrum smithii was established.The analysis results indicated that applied nitrogen was the most important impact factor on western wheatgrass seed yield,planting density and application of PP333 ranked in turn.A kind of synergistic type was demonstrated for the coupling effects of applied nitrogen and planting density on seed yield.The optimum range of the management factors were concluded by frequency analysis as following,planting density from 429×104 to 450×104shoot/hm2,application rate of nitrogen from 160 to165 N kg/hm2,application rate of PP333 from 0.197 to 0.233 a.i.kg/hm2. |
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| Keywords: | Pascopyrum smithii(Rydb) A Love Seed yield Applied nitrogen and planting density Coupling effects Model analysis |
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