[1]党廷辉,高长青.渭北旱塬影响小麦产量的关键降水因子分析[J].水土保持研究,2003,10(01):9-11,36.
　DANG Ting-hui,GAO Chang-qing.Study on Key Water Factors of Affecting Wheat Yield in Weibei Dry Highland[J].Research of Soil and Water Conservation,2003,10(01):9-11,36.
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渭北旱塬影响小麦产量的关键降水因子分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 10 期数: 2003年01期 页码: 9-11,36 栏目: 出版日期: 1900-01-01
Title:
Study on Key Water Factors of Affecting Wheat Yield in Weibei Dry Highland
作者:
党廷辉1,2, 高长青3
1. 中国科学院水利部水土保持研究所;
2. 西北农林科技大学水土保持研究所, 陕西杨陵 712100;
3. 长武县农技推广中心, 陕西长武 713600
Author(s):
DANG Ting-hui1,2, GAO Chang-qing3
1. Institute of Soil and Water Conservation, Chinese Academg of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China;
2. Northwestern Sci-tech University of Agriculture and Forestry, YangLing 712100, Shaanxi, China;
3. Changwu Agriculture Technology Extension Center, Changwu 713600, Shaanxi, China
关键词:
小麦; 关键期降水; 渭北旱塬
Keywords:
winter wheat; key stages’ rainfall; Weibei dry highland
分类号:
S512.11;S273.4
摘要:
水分是旱塬区作物产量的主要限制因子。不同小麦生长时段的雨量大小和分布对小麦产量的作用存在很大差异。通过双重筛选逐步回归方法，对不同施肥处理小麦产量与生育时段降水分析表明，小麦播前休闲期7、8、9三个月降水在决定来年冬小麦产量方面起关键作用，同时越冬期11月、1月、2月降水对小麦产量也有十分重要的影响。从统计学上认为上述关键期降水决定来年小麦产量，并不否认其它时段降水对小麦的重要性，只能认为其它阶段降水一般可以保证需要。
Abstract:
Water is a main limited factor to crop yield in dry highland of Loess Plateau.The effects of rainfall amount and distribution in stages of winter wheat growing to crop yield show great differences.After analyzing the relationship between wheat yield of various treatments and rainfall of wheat growth stages with the means of the Double Screening Stepwise Regression, it was found that the rainfall in fallow time (July, August and September) of pre planting wheat plays a key role on wheat yield in coming year, and the rainfall in winter (November, January and February) has important impact in wheat yield as well.Above the key stages, rainfall is considered very important to wheat yield in coming year, without denying the importance of the other stages’ rainfall to wheat.Only was it known that the rainfall in other stages may meet crop’s necessities.

参考文献/References:

[1] 李玉山, 苏陕民.长武王东沟高效生态经济系统综合研究[M].北京:科学技术文献出版社, 1991.115-125.
[2] 袁志发.多元统计分析[M].杨陵:天则出版社, 1988.

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备注/Memo

收稿日期:2002-11-25
基金项目:中国科学院知识创新工程项目（KZCX2-413-5）；国家科技攻关项目（2001BA508B18）资助
作者简介:党廷辉（1964- ），男，在职博士，副研究员，主要从事土壤作物营养与施肥研究。

更新日期/Last Update: 1900-01-01