Abstract：‘Ningnongke No.5’ is a new small fruit type watermelon F1 hybrid of early maturity，bred by crossing selfing line ‘14-3’ as female parent and selfing line ‘WH-1’ as male parent．The whole growth period is about 98 days，and fruit development period is about 30 days．The plant growth vigor is strong．It is easy to bear fruit．The fruit is of oval shape．Its peel is light green covered with green strips，0.4-0.6 cm in thickness，and 9.3-10.5 kg · cm-2 in hardness．This variety is tolerant to storage and transportation．The flesh is red in color and crisp．The soluble solid content in center part is about 11.5%．The single fruit weight is 1.4-1.6 kg．In the fields，its resistance to powdery mildew and fusarium wilt is comparable to that of the contrast ‘Huiling’．It can yield about 48 t · hm-2．It is suitable for spring protected field cultivation in Ningxia and the surrounding areas．
