Coupling Effects of Applied Nitrogen,Planting Density on Western Wheatgrass Seed Yield by Model Analysis

doi:10.11733/j.issn.1007-0435.2006.02.001

›› 2006, Vol. 14 ›› Issue (2): 99-105.DOI: 10.11733/j.issn.1007-0435.2006.02.001

Coupling Effects of Applied Nitrogen,Planting Density on Western Wheatgrass Seed Yield by Model Analysis

WANG Quan-zhen^1,2, HAN Jian-guo², ZHOU He², LIU Fu-yuan³, ZHONG Yong³

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

Received:2005-06-27 Revised:2006-03-16 Online:2006-05-15 Published:2006-05-15

蓝茎冰草种子产量与施氮量和密度互作的模型分析

王佺珍^1,2, 韩建国², 周禾², 刘富渊³, 仲勇³

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

通讯作者: 韩建国,E-mail:grasslab@public3.bta.net.cn
作者简介:王佺珍(1963- ),男,内蒙古人,博士,副教授,主要从事牧草种子生产及相关领域的研究,已发表学术论文26篇,参编著作2部,E-mail:WangQuanzhen191@163.com
基金资助:
西北农林科技大学人才基金;国家“948”重大项目(202009)

Abstract

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.

Key words: Pascopyrum smithii(Rydb) A.Love, Seed yield, Applied nitrogen and planting density, Coupling effects, Model analysis

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。

关键词: 蓝茎冰草, 种子产量, 氮肥与密度, 互作效应, 模型分析

CLC Number:

S812

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]. , 2006, 14(2): 99-105.

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]. , 2006, 14(2): 99-105.

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Coupling Effects of Applied Nitrogen,Planting Density on Western Wheatgrass Seed Yield by Model Analysis

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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