冬小麦微喷带灌溉条件下水肥运移规律研究  

Study on Water-fertilization Translation Rules of Winter Wheat under Micro-spraying Hoses Irrigation

作　　者：石学萍 刘占卯 刘伊明 李英钗 秦焱 檀海斌 SHI Xue-ping,LIU Zhan-mao,LIU Yi-ming et al(The Semi-arid Agriculture Engineering and Technology Research Center of China,Shiji- azhuang, Hebei 05000)

机构地区：[1]国家半干旱农业技术研究中心,河北石家庄050000

出　　处：《安徽农业科学》2018年第13期141-143,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究微喷带灌溉方式对冬小麦灌水后水肥均匀度和运移的影响。[方法]通过对微喷带灌溉条件下冬小麦不同生长时期,距微喷带垂直距离25、50、75 cm土壤剖面0~20、20~40、40~60 cm土层水分、碱解氮和速效磷含量的测定,研究冬小麦农田土壤水分和养分在土壤中的变化及运移规律。[结果]各土层速效养分运移规律与水分运移规律基本一致;作物生长不同时期,水肥在0~20cm土层中均匀度不同,但20~60 cm土层水分变化趋于一致;碱解氮主要集中在0~60 cm土层,速效磷灌水施肥后主要集中在0~40cm土层。[结论]该研究为制定科学的灌溉施肥制度提供理论依据。[Objective] To study the effect of micro-spraying hoses irrigation on the evenness and migration of winter wheat after irrigation.[Method]By measuring the content of soil moisture,alkaline hydrolysis nitrogen and available potassium,the vertical distance of 25,50 and 75 cm form micro-spraying hoses and the soil area of 0-20,20-40 and 40-60 cm,in different periods of winter wheat under micro-spraying hose irrigation,the rules of soil moisture change and soil nutrient translation in winter wheat were analyzed.[Result]The rules of soluble nutrient translation and water translation were basically same in each soil layer. Winter wheat growing in different periods,the uniformity of water and fertilization in 0-20 cm soil layer was different,but the change of soil moisture had a similar tendency in 20-60 cm soil layer. The alkaline hydrolysis nitrogen mainly concentrated in 0-60 cm soil layer,available potassium mostly concentrated in 0-40 cm soil layer.[Conclusion]The study provides theoretical basis for the establishment of scientific irrigation fertilization system.

关 键 词：冬小麦 微喷带 水分 速效养分 碱解氮 速效磷 

分 类 号：S152.7[农业科学—土壤学] S158[农业科学—农业基础科学]