摘要
利用国家农业气象站河北省10个站点2001年-2010年的农业气象、夏玉米产量和农田土壤湿度等资料,采用线性回归分析等方法,研究了河北省夏玉米产量与降水量、积温及土壤湿度之间的关系。结果表明:多数站点夏玉米产量与降水量、积温、土壤相对湿度呈正相关关系。在夏玉米生长季节内当降水总量为250～450mm、积温大于2 200℃、土壤相对湿度大于田间持水量的70%时,河北省玉米产量可达其最高产量的70%以上。若降水量低于250mm,需通过灌溉补充土壤水分,以保障玉米产量。
The relationships among the summer maize yield and the precipitation amount,accumulative temperature,and soil moisture were analyzed using the linear regression method based on the data of agricultural meteorology,maize yield,and soil moisture at 10 agricultural and meteorological stations in Hebei province from 2001 to 2010,which can help understand the factors affecting the maize yield.The results showed that the summer maize yield is in positive correlation with the seasonal precipitation,accumulative temperature,and mean soil moisture at most of the stations.The maize yield in Hebei province can reach 70% of its maximum yield when the precipitation amount in the growing season of maize is 250～450 mm,the accumulative temperature is more than 2 200 ℃,and the soil moisture is higher than 70% of the field moisture capacity.When the seasonal precipitation is less than 250 mm,irrigation is needed to supplement the soil moisture and then ensure the maize yield.
出处
《南水北调与水利科技》
CAS
CSCD
北大核心
2012年第4期133-136,146,共5页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金项目(51179005)
流域水循环模拟与调控国家重点实验室基金(IWHR-SKL-201105)
关键词
河北省
夏玉米产量
降水量
积温
土壤湿度
Hebei province
summer maize yield
precipitation
accumulative temperature
soil moisture
作者简介
作者简介：张睿昊（1989-），女，山东东营人，硕士，主要从事农业水肥高效利用方面研究。E-mail：zhangruihao@yahoo．cn
通讯作者：刘海军（1975-），男，陕西富平人，副教授，主要从事农业水肥高效利用和现代节水灌溉理论及技术的研究。E-mail：shanxilhj@bnu．edu．cn
