吉林省中西部地区田间持水量实验研究

The Experimental Study of field moisture capacity in central and western regions of Jilin Province

田间持水量是表征田间土壤保持水分能力的指标,是计算土壤灌溉量的重要指标,也是确定墒情和旱情评价指标的重要参数。文章通过三种不同实验方法对吉林省中西部地区五种土壤质地、三层土深的田间持水量进行实验研究,其结果表明,该区田间持水量与土壤质地、土层深度、渗透及退水能力密切相关,其实验数据可应用于该区计算土壤灌溉量,确定墒情和旱情评价指标等。

Field moisture capacity is the characterization of field soil retaining moisture capacity indicators, is an important indicator for calculating the amount of soil irrigation, and also the important parameters to determine soil moisture and drought. Through three different experimental methods, the field capacity for five soil texture and three layers depth in the central and western regions of Jilin Province was experimented and studied; The results show that the field capacity of the area is closely related to soil texture, soil depth, infiltration and retreat water capacity, and the experimental data can be used to ealeulate soil irrigation amount in the district to determine the moisture and drought evaluation.