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山西晋南地区冬小麦土壤水分变化规律研究 被引量:2

Research on the Variety Regulation of Soil Moisture of Winter Wheat in Southern Shanxi Province
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摘要 [目的]研究山西晋南地区冬小麦土壤水分变化规律。[方法]利用山西省运城市土壤水分观测资料,对晋南地区自然状况下土壤水分变化规律进行分析,并采用相关分析法,对气温、降水量、蒸发量、日照时数对土壤水分的影响进行了研究。[结果]影响土壤水分变化的主要因子是降水、蒸发、气温和日照时数,其中降水和蒸发的影响是直接的,气温和日照时数的影响是间接的;对于土壤不同层次,气候因子所起的作用不同,但对土壤水分含量起主要作用的还是降水和蒸发2个因子;土壤水分变化较平稳时段在春季,一般年份即使降水较少,土壤含水量变化也相对较小,有利于小麦返青生长。[结论]该研究为土壤水分资源的合理利用、冬小麦产量的提高提供科学依据。 [ Objective ] The research aimed to study the variety regulation of soil moisture of winter wheat in southern Shanxi province. [ Method] Using the soil moisture observational data in Yuncheng City,the variety regulation of soil moisture under natural conditions were an- alyzed in southern Shanxi province, and the impact of the temperature, precipitation, evaporation, sunshine hours on soil moisture were stud- ied by correlation analysis method. [ Resuh ] The main factors affecting soil moisture were precipitation, evaporation, temperature and sun- shine hours, the effect of precipitation and evaporation were direct, the effect of temperature and sunshine were indirect. For different levels of soil, climate,the climate factor plays role is different,the precipitation and evaporation play a major role in soil moisture. Be in spring season time interval soil moisture change is more stable, even if precipitation is less, soil moisture change is also relatively small in normal year, which is beneficial to the wheat resumes growth growing. [ Conclusion] The study provides the scientific basis for the the rational use of soil water resources and improving the yield of winter wheat.
出处 《安徽农业科学》 CAS 2014年第7期1973-1975,共3页 Journal of Anhui Agricultural Sciences
关键词 土壤水分 气候因子 变化规律 影响 晋南地区 Soil moisture Weather factor Variety regulation Effect Southern Shanxi province
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