Study on Rice Water Requirement of Liangping County under Climate Change Background

• 作者: Gao Fei Mou Xinli Qi Junsheng Wang Qinqin Zhang Ting
• 来源期刊: 气象与环境研究：英文版
• 学科: 农学
• 关键词: 作物需水量 水稻生育期 全球气候变化 梁平县 气候倾向率 灌溉需水量 干旱预警 气象数据
• 年，卷（期）: 2014,（9）
• 页码范围: 57-59
• 页数: 3页
• 分类号: S274.1

摘要

Under global climate change background,using daily meteorological data at Liangping ground meteorological station during 1961- 2012,we calculated crop water requirement and net irrigation water requirement during rice growth period in Liangping County,and analyzed its climate tendency rate. Results showed that climate tendency rate of crop water requirement during growth period of rice was only- 0. 007 mm /10 a; climate tendency rate of rainfall was- 0. 06 mm /10 a,but interannual change was relatively larger; climate tendency rate of net irrigation water requirement was 0. 011 mm /10 a. In the years when drought occurred,such as 2006 and 2011,both rice water requirement and net irrigation water requirement in Liangping were greatly higher than means over the years. Therefore,we should focus on drought pre-warning and risk management improving drought disaster prevention in Liangping in the future.