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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (21): 85-88.doi: 10.11924/j.issn.1000-6850.2013-3224

所属专题： 小麦； 农业气象

• 农学 农业基础科学 • 上一篇    下一篇

新疆最北部阿勒泰市冬季最大冻土深度对春小麦生育期的影响

李海花 刘雪原 何江林   

  • 收稿日期:2013-12-10 修回日期:2014-01-21 出版日期:2014-07-25 发布日期:2014-07-25
  • 基金资助:
    国家重大科学研究计划项目(2012CB956204)； 新疆气象局项目 “阿勒泰地区农业气象数据库系统建设” (201114)。

Influence of the Maximum Frozen Soil Depth on the Growth Period of Spring Wheat in Winter in the Most North of Xinjiang: Altay City

  • Received:2013-12-10 Revised:2014-01-21 Online:2014-07-25 Published:2014-07-25

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摘要： 为了分析新疆最北部阿勒泰市冻土深度的气候变化特征，及对春小麦生育期的影响，利用阿勒泰市冬季最大冻土资料，分析冻土深度的年际和月变化特征，并分析冻土深度对春小麦生育期的影响效应。结果表明：近52年来，阿勒泰市冬季冻土深度的变化呈现出逐年减小的趋势，其减小速率为2.84 cm/10 a；冬季最大冻土深度以2—3月最大；春小麦全发育期天数的变化是呈减少趋势的，减少率为3.97 d/10 a；最大冻土深度对生育期的影响效应（除全生育期外）均为负值，即b均小于0，即生育期随冻土深度的减小（增加）而提前（推迟）；阿勒泰市冬季最大冻土深度对春小麦的全生育期的影响是正值，推迟率为3.01 d/10 cm。

关键词: 机制创新, 机制创新

Abstract: Using the data of the maximum frozen soil depth in Altay City, the author analyzed the annual and monthly variability of the maximum frozen soil depth in winter, and the impact of the frozen soil depth on the growth period of spring wheat. The results showed that: during the 52 years, the trend of the maximum frozen soil depth in winter was decreasing year by year with a decreasing rate of 2.84 cm/10 a ; the annual maximum frozen depth appeared in February and March; the trend of the growth dates of spring wheat was decreasing with a decreasing rate of 3.97 d/10 a; The effects of the maximum depth of frozen soil on growth period (except the whole growth period) were negative (b<0), which meant that the growth periods shift to an earlier date (postponed) with the decreases (increases) of the maximum depth of frozen soil; the effects of the maximum depth of frozen soil on the growth period of spring wheat were positive with a delaying rate of 3.01 d/10 cm.