青海东部农业区春小麦非充分灌溉制度研究

Study of A Not Sufficient Irrigation System of Spring Wheat in Agriculture Area of Eastern Qinghai

[目的]总结青海地区非充分灌溉条件下小麦需耗水规律和灌溉制度,以指导今后该地区的农田灌溉工作。[方法]对青海东部农业区春小麦灌水量、土壤含水量、作物性状进行观测和数据分析。[结果]出苗期到抽穗期,随着小麦的生长,其日耗水量和阶段需水量逐渐增大,扬花到成熟期日耗水量达到最高,说明该时期是小麦耗水的关键时期,也是需水量最大的时期。之后日耗水量和阶段需水量下降,收割期达到最低。[结论]该研究可为提高小麦产量和品质的同时提高水分利用效率提供科学依据。

[Objective] The aim was to summarize the water demand and consumption regulation and irrigation formulate of wheat under not fully irrigation in Qinghai area,and guide the irrigation work of this area in future.[Method] The irrigation amount,soil water content,traits of spring wheat in eastern agricultural area of Qinghai were observed and the data were analyzed.[Result] From seedling emergence period to heading period,with wheat growing,its daily water consumption and water requirements in each growing period increased,and the daily water consumption from flowering period to maturing period was the highest,showing this stage was the key stage of wheat water consumption,also was the stage of big water requirement.After that daily water consumption and water requirements in each growing period reduced,and in harvesting period,it was the lowest.[Conclusion] The study provides a scientific basis for improving yield and quality of wheat,and promoting water use efficiency at the same time.