干旱地区农业研究2011，Vol.29Issue(1)：34-40,7.
黑龙江省土壤湿度的气候响应及其与大豆产量的关系
Responses of soil moisture to climate change and relationship between soil moisture and soybean yield in Heilongjiang
摘要
Abstract
Based on the 1980～2007 observation data of ten-day soil moisture,monthly air temperature,and monthly precipitation during crop growth season(from May to September)from 32 agro-meteorologieal stations in Heilongjiang Province, the spatiotemporal variation of surface soil(0～30cm)moisture and its responses to the air temperature and precipitation in the study area were analyzed by using statistical method,and the model for analyzing relationship between soybean yield and soil moisture was built by use of regression methods in the study area.The results showed that in Heilongjiang,the surface soil moisture during crop growth season in 1980～2007 had a decreasing trend,and tended to be aridified,especially in the west parts.Before the 1990s,the surface soil was relatively humid, but thereafter,the humidity kept decreasing,and partial dryness occurred.In the study period,the mean air temperature during crop growth season had a periodical increase before 1992,with a small fluctuation in a cycle of 6 years,but increased obviously after that.The precipitation dtiring crop growth season had a larger inter-annual variation, with a cycle of 4 ～ 5 years. The surface soil moisture during crop growth season was significantly negatively correlated to air temperature and positively correlated to precipitation.Both air temperature and precipitation were the main climatic factors affecting the variation of surface soil moisture in Heilongjiang.Soybean yield was significantly correlated to the surface soil moisture in the study area,and partial dry or wet soil had a adverse influence on soybean yield.关键词
土壤湿度/气温/降水/产量Key words
soil moisture/air temperature/precipitation/yield分类
农业科技引用本文复制引用
姜丽霞,王萍,李帅,王晾晾,曲辉辉,吕佳佳,宫丽娟,王秋晶,闫平..黑龙江省土壤湿度的气候响应及其与大豆产量的关系[J].干旱地区农业研究,2011,29(1):34-40,7.基金项目
黑龙江省气象局重点项目(YB2009-08) （YB2009-08）
中国气象局气候变化专项(CCSF-09-13) （CCSF-09-13）
国家科技支撑计划"十一五"重大项目(2007BAC03A06) （2007BAC03A06）
