The influence of trace element fertilizer and rare earth element on alfalfa yield and quality

The influence of trace element fertilizer and rare earth element on alfalfa's yield and quality was studied on barren,heavily salted place. The results indicated that: trace element fertilizer and rare earth element can raise alfalfa's yield,the solution of 200 PPM rare earth element is the highest,the yield is 16 708.40 kg/hm~2,higher than the antitheses 24.74%;the protein content of alfalfa raises after fertilizing,the solution of 100 g/kg rare earth element is obvious,the content of protein is 22.14%,23.30% respectively,more than the antitheses35.99%,30.75%;to raise the income of alfalfa plant,the solution of 200 g/kg rare earth element is the highest,being 1 979.52 yuan/hm~2.