We have carried out an experiment of the high yield and long effective cultivation tec-hnique of applying Yidaoqing to a new red-peel onion variety "xicong-2"bred through laser-radiation. Compared with its conventional control, Our technique can increase the fertilizer's application rate by 25%,meet the needs of the overall growth of the variety,decrease its early spouting rate by about 30%,raise its production by 3%,reduce labor force by 75%and improve its quality. This technique shows us a wonderful applying prospect in future production.