氮肥形态和施肥水平对樱桃萝卜产量及品质的影响

采用田间试验和化学分析相结合的方法研究酰胺态氮肥(以尿素为例)和铵态氮肥(以磷酸二铵为例)不同施肥水平对樱桃萝卜产量及品质的影响,从而确定樱桃萝卜的合理施肥形态及施肥量.结果表明:2种形态氮肥相比较,铵态氮肥的产量、氨基酸含量均较高,硝酸盐含量较低,维生素C含量相近.因此,樱桃萝卜高产优质的氮肥合理施肥形态及施肥量为磷酸二铵38.3 g/m2(合26 kg/667m2)左右较为适宜.

Effect of Form and Amount of Nitrogen on Yield and Quality of Cherry Radish

Combined researches of field experiments and chemical analysis were used to test the impact of amide nitrogen(CO(NH2)2 as a case)and ammonium nitrogen((NH4)2HPO4 as a case)on yield and quality of cherry radish at different amount of fertilizer,in order to find out the optimum form and amount of the nitrogen.The results showed that the yield and content of amino acid were all higher when applying ammonium nitrogen,while nitrate level was low,and the content of vitamin C was similar for both kinds of fertilizer.Therefore,the appropriate fertilizer form and amount should be(NH4)2HPO438.3 g/m2(or 26 kg/667m2)for high yield and good quality of cherry radish.