摘要
利用驻马店市1990-2005年的降水、土壤墒情和田间调查基本资料,筛选出灌浆前期干旱、后期干旱和全程干旱三种干旱年型,分析了各典型年小麦灌浆过程以及灌浆速率的变化特点。结果表明:与正常年型相比,干旱明显影响小麦的灌浆速率,而且使小麦灌浆时间缩短;灌浆前期干旱有促进灌浆和增加粒重的作用,而后期干旱对小麦灌浆有抑制作用,全程干旱使小麦的灌浆速率明显减弱。结果可为拓展干旱协迫下的小麦灌浆理论和灌浆期合理灌溉提供参考。
Based on the data of precipitation,soil moisture and field investigation from 1990 to 2005 in Zhumadian City, Henan Province, the filling process and changes of filling velocity of winter wheat were analyzed in three chosen typical drought years, such as drought during the early filling stage, drought during the late filling stage and drought during the whole filling stage. The results showed that drought not only had obviously influenced on wheat filling velocity, but also shortened the wheat filling duration compared with normal years. The drought during the early filling stage accelerated wheat filling velocity and increased wheat grain weight, while the drought during the late filling stage restrained the wheat filling process. The drought during the whole filling stage significantly trailed off the filling velocity.
出处
《中国农业气象》
CSCD
2006年第2期98-101,共4页
Chinese Journal of Agrometeorology
基金
河南省重大农业气象灾害监测预测及评估系统项目
关键词
冬小麦
干旱
灌浆
灌浆速率
Winter wheat
Drought
Filling
Filling velocity
