'Mengyu 3'jerusalem artichoke is an excellent descendant obtained by artificial hybridization from the white jerusalem artichoke strain of Nanjing Agricultural University as a female parent and the local red jerusalem artichoke material of Shaanxi Province as a male parent.The plant is late maturing,the growth period is from 125 to 155 days,and its average height is 2.4 m,the number of first-level branches is from two to five.The tuber is pink skin and bud eyes,which with concentrated and regular pattern.The yield of tuber can reach 33 180 to 35 000 kg·hm-2.It has strong stress resistance,and is suitable to plant in arid and semi-arid and desertified regions where the annual rainfall is above 300 mm.