Effects of Rainwater Efficiency Different Rainwater Diversion Patterns on Collection Efficiency and Water Utilization in Cornfield

• 作者: Chen Shihua Duan Zongyan Lu Yao Pan Yanhua Wang Jianxin Wang Panlei
• 来源期刊: 气象与环境研究：英文版
• 学科: 交通运输
• 关键词: 下线 服务 迁移
• 年，卷（期）: 2015,（8）
• 页码范围: 54-56
• 页数: 3页
• 分类号: U469.11

摘要

Four rainwater diversion patterns including undisturbed soil ditch(T1),slope compaction(T2),asbestos sheet covering after compaction(T3) and plastic film covering after compaction(T4) were set in cornfield in arid areas of Yunnan Province,and effects of various patterns on rainwater collection efficiency,water utilization efficiency and corn yield were studied.The results shows that rainwater collection efficiency,water utilization efficiency and corn yield of the four diversion patterns presented the same trend,namely T4 > T3 > T2 > T1.Overall,rainwater collection efficiencies of the four diversion patterns ranged from 41.7%to 58.7%;compared with T1,water utilization efficiencies of T2,T3 and T4 increased by 34.9%,53.5%and 92.5%,and maize yields of them improved by 1 767.0,1 981.5 and 2 385.0 kg/hm~2.