【作者】 刘丹丹； 王福兰； 常世杰； 刘晓亮； 贾洪雷；

【Author】 LIU Dan-dan,WANG Fu-lan,CHANG Shi-jie,LIU Xiao-liang,JIA Hong-lei*(School of Biological and Agricultural Engineering,Jilin University,Changchun 130025,China)

【机构】 吉林大学生物与农业工程学院；

【摘要】 春播期土壤水分和温度对作物出苗至关重要。本文对比耕播联合作业和传统耕种两种方式,并以不耕作方式作为参照,分析了耕层土壤不同土层中土壤含水量和温度的变化规律,并讨论其原因。结果表明:土壤失墒程度大小顺序是:不耕区>耕播联合区>传统作业区;两种作业方式对耕层土壤上部的水分和温度影响较大,尤其是表层土壤;与传统作业相比,联合作业能有效减少土壤水分无效蒸发,提高土壤含水量和蓄水量;翻耕有利于土壤增温,传统作业更易使土壤温度升高,联合作业增温效果稍差。更多还原

【Abstract】 The soil water content and temperature are essential for seed germination in spring.Comparing combined operation and traditional cultivation,the paper discussed the changes and reasons of soil water content and temperature in different soil level.The results show that the loss of soil moisture in order is no farming>comb-ined operation>traditional cultivation.The two kinds of practice have a significant impact on soil water content and temperature,especially the two upper soil levels.Compared with traditional cultivation,combined operation can significantly increase soil water content and water storage capacity and reduce invalid evaporation.Tillageisconducivetowarming.Thetraditional cultivationis moreeffectivefor warmingthancombinedoperation.更多还原