2014年辽西朝阳地区玉米生长季降水特征及气候成因分析  

Precipitation Characteristics and Climate Reason Analysis of Western Liaoning During Corn Growing Season in 2014

作　　者：张富荣[1] 张玉书[2] 刘志鹏[1] 苏华[1] 

机构地区：[1]辽宁省朝阳市气象局,辽宁朝阳122000 [2]中国气象局沈阳大气环境研究所,沈阳110016

出　　处：《湖北农业科学》2016年第17期4604-4607,共4页Hubei Agricultural Sciences

基　　金：中国气象局气候变化专项(CCSF-09-13);辽宁省农业攻关及成果产业化项目(2014210003)

摘　　要：研究不同年型玉米生长季降水特征以及气候成因,为提高气候预测预报准确率和农业生产防灾减灾能力提供科学依据。利用朝阳地区7个国家级气象观测站2014年气象资料,分析玉米生长季降水特征及＂夏旱＂气候成因。结果表明,2014年玉米生长季降水偏少且时空分布极不均匀,玉米出苗拔节期和成熟末期,降水偏多;抽穗开花期7-8月降水持续偏少,发生了自1952年有气象记录以来最严重的＂夏旱＂,给玉米开花授粉和灌浆造成严重影响,致使玉米产量降低;造成朝阳地区2014年严重＂夏旱＂的主要气候原因是大气环流异常。This study was aimed at providing scientific reference to improve the accuracy of weather forecasting and the capacity of disaster prevention and reduction for agricultural production through studying the precipitation characteristics and climate causes in corn growing seasons. The study was based on the meteorological data of 2014 from seven national meteorological observation stations in Chaoyang. The results showed that the precipitation decreased and temporal-spatial distribution was very uneven in 2014 during the corn growing season. The precipitation was much more in corn emergence-jointing stage and last-mature stage, but it was continued decreasing in July and August and caused the most serious ＂summer drought＂since 1952. The corn was just during heading stage and the corn pollination and grain filling were seriously affected, which resulted lower maize yields. The main reason of this serious ＂summer drought＂ was the anomalies of atmospheric circulation.

关 键 词：朝阳地区 玉米 生长季 降水 气候成因 大气环流异常 

分 类 号：P461[天文地球—大气科学及气象学]