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郑抗４号是中国农业科学院郑州果树研究所育成的中熟、抗病、丰产杂交一代西瓜新品种。全生育期１００天左右，果实发育期３３天左右；单瓜重６ｋｇ，产量３５００～４５００ｋｇ／６６７ｍ２；中心可溶性固形物含量１０．５％～１１．０％；果实花皮，红瓤，椭圆形；中抗枯萎病。１９９９年４月通过河南省农作物品种审定委员会审定。
Zheng Kang 4 is the Chinese Academy of Agricultural Sciences, Zhengzhou Institute of Fruit bred ripe, disease-resistant, high yielding new generation of watermelon varieties. The whole growth period of about 100 days, the fruit development period of about 33 days; single melon weight 6kg, yield 3500 ~ 4500kg / 667m2; center soluble solids content of 10.5% to 11.0% Fusarium wilt; In April 1999 through the Henan Provincial Crop Variety Approval Committee.