1986年春季,洪洞县科委引进了以稀土元素为主要成份的新型梢物生长调节素——“农乐”益植素,在小麦生产上开始应用,进行叶面喷施,喷施时间是在小麦返青到拔节阶段,喷施麦田分布在平川高水肥、中水肥和丘陵区的麦田上。喷施结果表明,这种 Spring 1986, Hongtong County Science and Technology Commission introduced a rare earth element as the main component of the new shoots somatotropin - “agricultural music” allotrophin, wheat production began to apply for foliar spraying, spraying time Wheat is greening to join the stage, spraying wheat fields are located in the Hirakawa high water and fertilizer, fertilizer and hilly areas on the wheat fields. Spray results show that this