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西瓜是丰都永兴的主要经济作物。研究氮肥对西瓜高产优质的效应具有现实意义,结果表明:氮肥对西瓜有明显的增产效2果,并能显著改善品质。在土壤速效氮含量为72mg/kg较低时,适宜施氮量为180kg/hm。
Watermelon is the main cash crop in Yongda, Fengdu. Studying the effect of nitrogen fertilizer on the high yield and quality of watermelon is of practical significance. The results show that nitrogen fertilizer has obvious effect of increasing yield of watermelon and can significantly improve the quality. When available nitrogen content in soil was 72mg / kg, the suitable nitrogen application rate was 180kg / hm.