广西甘蔗茎流速率对气象变化的响应规律研究  

Guangxi Sugarcane Stem Flow Rate's Response to Climate Change

作　　者：何令祖 张廷强 吴卫熊 

机构地区：[1]广西壮族自治区水利科学研究院,南宁530023 [2]中国水利水电科学研究院,北京100038

出　　处：《中国农村水利水电》2016年第3期19-22,共4页China Rural Water and Hydropower

基　　金：水利部公益性行业科研专项(201301013)

摘　　要：茎流速率是影响甘蔗作物耗水的重要因素。采用插针式茎流计和气象站对甘蔗的茎流速率以及太阳辐射、空气湿度、空气温度进行持续同步监测,利用SPSS软件建立了甘蔗茎流速率与太阳辐射、空气温度、空气湿度相关关系预测模型,计算分析发现:广西甘蔗茎流速率在白天主要受太阳辐射影响,在夜间主要受空气温度、空气湿度影响;而且,广西甘蔗茎流速率还随着气象因素呈周期性变化,晴天茎流呈M型,茎流速率最大可达38g/h;阴天茎流呈倒V型,茎流速率最高20g/h;雨天茎流较为平缓,茎流速率最高10g/h。利用所建立茎流速率与气象因子相关关系模型,进行广西甘蔗耗水量预测,简单快捷,有利于广西各地生产单位有效的制订甘蔗节水灌溉制度。Stem flow rate is an important factor affecting water consumption of sugarcane crop.This paper uses the pin type flow meter and weather station to conduct continuous and simultaneous monitoring on sugarcane stem flow rate and solar radiation,air humidity and air temperature.SPSS software is used to establish a sugarcane stem flow rate prediction model via correlation between sugarcane stem flow rate and solar radiation,air temperature,air humidity.The calculation and analysis results indicate that Guangxi sugarcane stem flow rate is mainly affected by solar radiation during the daytime,and mainly affected by air temperature and air humidity at night.In addition,Guangxi sugarcane stem flow rate changes periodically with the meteorological factors,in sunny days stem flow rate varies as＂M＂type with maximum up to 38g/h;and in cloudy days varies as inverted＂V＂type with maximum up to20g/h;and in rainy days varies stably with maximum up to 10g/h.By using the established stem flow rate prediction model,we can forecast water demands of Guangxi sugarcane simply and quickly,which is helpful to developing effectively sugarcane water-saving irrigation system in Guangxi Province.

关 键 词：甘蔗 作物耗水 茎流速率 气候变化 

分 类 号：S27[农业科学—农业水土工程] TV93[农业科学—农业工程]