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尿素、碳铵和氯铵对蔬菜产量和品质的影响的田间试验结果表明,大白菜在等氮量情况下,对尿素,碳铵和氯铵的肥效无显著差异,盆栽试验结果也表明,尿素与碳铵肥效相当,唯氯铵肥效因蔬菜种类而异,氯铵有明显降低蔬菜硝酸盐含量的效果,氯铵与尿素相比,约降低硝酸盐50%,在中等氮素水平下,尿素、碳铵和氯铵处理,蔬菜硝酸盐平均含量分别为659,633和440 ppm,除氯铵处理在允许范围内外,尿素和碳铵处理均超过标准。
The results of field experiments on the effects of urea, ammonium bicarbonate and ammonium chloride on the yield and quality of vegetables showed that there was no significant difference in the fertilizer efficiency of urea, ammonium bicarbonate and ammonium chloride under the condition of isobaric nitrogen. The pot experiment also showed that urea Compared with the effect of ammonium bicarbonate fertilizer, the effect of only chlor-ammonium fertilizer varies with different types of vegetables, ammonium chloride significantly reduces the effect of nitrate in vegetables. Compared with urea, ammonium chloride reduces nitrate by 50%. Under medium nitrogen level, urea , Ammonium bicarbonate and ammonium chloride, the average contents of nitrate in vegetables were 659,633 and 440 ppm, respectively. Except for the treatment with ammonium chloride within the allowable range, urea and ammonium bicarbonate exceeded the standard.