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温室每生产1 000kg西瓜,会从土壤或基质中吸收氮2.52kg、磷0.81~0.92kg、钾2.86~3.38kg,它们的吸收比例为1∶0.34∶1.24,此外还要吸收钙、镁、硼、锌、钼、铁等微量元素。西瓜整个生长发育期对钾吸收最多,其次是氮和磷。科学、适时、精准施肥,对西瓜丰产、提升品质和增强抗病虫能力极其重要。重视施用农家肥,有利于提高西瓜的产量和品质。钾对西瓜很重要,它能提高产量、品质和抗病虫等能力。西瓜是
Each greenhouse produced 1,000 kg of watermelon, soil or substrate from the absorption of nitrogen 2.52kg, phosphorus 0.81 ~ 0.92kg, potassium 2.86 ~ 3.38kg, their absorption ratio of 1: 0.34: 1.24, in addition to calcium, magnesium, boron , Zinc, molybdenum, iron and other trace elements. Watermelon throughout the growth and development of potassium uptake, followed by nitrogen and phosphorus. Scientific, timely, accurate fertilization, watermelon high yield, improve quality and enhance pest resistance is extremely important. Emphasis on the application of manure, is conducive to improving the yield and quality of watermelon. Potassium is important for watermelon, which increases productivity, quality and resistance to pests and diseases. Watermelon is