水稻蓄雨控灌技术的环境效应  

Environment Effect of Rain-water Storage and Controllable Irrigation of Rice

作　　者：刘敏昊[1] 任瑞英[2] 朱振荣[1] 张健[1] 

机构地区：[1]江苏省农村水利科技发展中心,南京210029 [2]河海大学设计研究院有限公司,南京210098

出　　处：《中国农村水利水电》2016年第5期55-57,共3页China Rural Water and Hydropower

基　　金：江苏省水利科技项目"水稻蓄雨控灌技术研究与示范"(2013010)

摘　　要：蓄雨控灌是减少稻田氮磷污染物负荷的有效手段。采用小区试验,分析了轻旱低蓄（T1）、轻旱高蓄（T2）模式下,农田和农沟尺度上氮磷浓度和氮磷负荷的差异。结果表明,农田尺度上,T2处理的TP和TN负荷显著低于T1,降幅分别为58.6%和58.8%,农沟尺度上分别降低59.7%和64.8%。降雨最初的8～14h,应尽可能不排或少排,使降雨在格田中滞留14h以上。Rain-water storage and controllable irrigation is an effective way to reduce the pollutant load of nitrogen and phosphorus in rice fields.This paper analyzes the difference of concentration and load of nitrogen and phosphorus on the scale of farmland and farm ditch between the modes of light drought-low storage（T1）and light drought-high storage（T2）through plot experiment.The results show that the load of TP and TN in treatment T2 are absolutely lower than in treatment T1 on the scale of farmland,and the decreasing range are 58.6% and 58.5%,and decrease by 59.7% and 64.8% on the scale of farm ditch.The rainfall should be drained off as little as possible in the first 8to14 hours,in order to let it stay in the chequered field for more than 14 hours.

关 键 词：水稻 蓄雨控灌 氮磷损失 环境效应 

分 类 号：S274.1[农业科学—农业水土工程] TV93[农业科学—农业工程]