Trend Surface Analysis of Effects of Fertilization Level on Dry-land Wheat Yield in Gully Regions of Loess Plateau

WEI Yan-hong; YUAN Zhi-fa; GUO Man-cai

doi:10.13961/j.cnki.stbctb.2014.01.053

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Trend Surface Analysis of Effects of Fertilization Level on Dry-land Wheat Yield in Gully Regions of Loess Plateau

- Trend Surface Analysis of Effects of Fertilization Level on Dry-land Wheat Yield in Gully Regions of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 33, Issue 1, Pages: 203-206(2014)
- 作者机构：
  
  西北农林科技大学理学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.01.053
  CLC：
- Published：2014
- 稿件说明：
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WEI Yan-hong, YUAN Zhi-fa, GUO Man-cai. Trend Surface Analysis of Effects of Fertilization Level on Dry-land Wheat Yield in Gully Regions of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 203-206.
DOI：

WEI Yan-hong, YUAN Zhi-fa, GUO Man-cai. Trend Surface Analysis of Effects of Fertilization Level on Dry-land Wheat Yield in Gully Regions of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 203-206. DOI： 10.13961/j.cnki.stbctb.2014.01.053.

摘要

在陕西省长武县长期定位试验的基础上

研究了黄土高原沟壑区常态降水条件下旱地氮磷不同配比施肥对小麦产量的影响。利用趋势面分析

建立了黄土高原沟壑区旱地小麦产量的趋势面模型

找出该地区得到小麦产量较高的施肥配比

以及产量最大值时施肥配比。结果发现

施氮量178.169 kg/hm

施磷量198.405 kg/hm

时小麦产量取得最大值(6152.6 kg/hm

)。可利用所得趋势面模型对常态年不同氮磷配比的小麦产量做出预测

为农业生产提供理论依据。

Abstract

Effects of different fertilization proportions of N and P on dry-land wheat yield in gully region of the Loess Plateau in the condition of normal rainfall were studied based on the long-term experiment in Changwu

Shaanxi Province. A trend surface model of dry-land wheat yield in the gully regions was constructed using trend surface analysis. Fertilization proportions for higher wheat yield were found and the fertilization proportions for the highest yield were N=178.169 kg/hm2 and P=198.405 kg/hm2. The maximum wheat yield was 6 152.6 kg/hm2. Wheat yield with different N and P proportions in the condition of normal rainfall can be predicted by the trend surface model

which provides a theoretical basis for the actual agricultural production.

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