Effects of Different N, P and K Ratios and NAM on Growth, Quality and NutrientUtilization of Watermelon Mulched with Gravel in Semiarid Area
MA Zhong-ming, DU Shao-ping, XUE Liang, FENG Shou-jiang
J4 . 2013, (3): 358 -364 .  DOI: 10.11869/hnxb.2013.03.0358