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种西瓜,施用肥料的种类不同,对西瓜品质有影响.施芝麻酱的西瓜最甜;施豆饼或大粪干的西瓜就多少带点酸头;施氮素化肥的西瓜就更酸。故城县饶阳店公社农科站的同志分析后认为,造成西瓜甜酸度不同的原因之一在于所施肥料的氮磷比例不同。芝麻酱的氮、磷比例为一点九比一(含氮百分之五点八,磷百分之三);豆饼氮、磷比例为六点三比一(含氮百分之七,磷百分之一点一二);大粪干氮、磷比例为三点三比一
The kind of watermelon, fertilizer application of different, have an impact on the quality of watermelon. The most sweet watermelon coated with sesame seeds; bean cake or dung dry watermelon on the number of sour; the watermelon is more sour. Gucheng Rao Yang Branch commune agricultural stations comrades that the watermelon caused by different acidity is one of the reasons that the proportion of nitrogen and phosphorus fertilizers are different. The ratio of nitrogen to phosphorus in sesame seeds is 1.9: 1 (nitrogen content: 5.8% and phosphorus content: 3%). The ratio of nitrogen and phosphorus in soybean cake is 6.3% (nitrogen content: 7% One point one or two points); dung dry nitrogen, phosphorus ratio of three to three