不同施肥处理对胭脂萝卜主要性状的影响

Effect of fertilizer treatments on the traits of red radish at the adult stage

以5个胭脂萝卜品种为材料,采用田间试验,研究不同施肥处理(施磷、施氮、施钾、施氮和钾、施磷和钾、施磷和氮、施氮磷钾及不施肥)对胭脂萝卜成株期主要性状的影响。结果表明,除色素含量性状外,不同施肥处理对胭脂萝卜成株期株高、根长、地上部鲜质量、地下部鲜质量、叶绿素含量、丙二醛含量及过氧化物酶活性均有显著影响。不同胭脂萝卜品种有不同的需肥特点。施用氮肥能显著提高胭脂萝卜的株高、地下部鲜重、地上部鲜重和叶绿素含量,促进胭脂萝卜的生长,施用磷肥和钾肥对胭脂萝卜主要性状影响不大。在胭脂萝卜施肥中,应主要施用氮肥,不施用或少施用磷肥和钾肥,结合不同品种需肥特性,施用不同量的氮肥。

A field experiment was carried out to investigate the effects of different fertilizer treatments（P fertilizer, N fertilizer, K fertilizer, N＋K fertilizers, P＋K fertilizers, P＋N fertilizers, P＋N＋K fertilizers,and no fertilizer application） on the traits of five different red radish varieties at the adult stage. The results indicated that, except for the pigment content, plant height, root length, fresh leaf weight, fresh root weight, chlorophyll content, malondialdehyde content and peroxidase activity were significantly affected. Additionally, different red radish varieties responded differently to different fertilizers. N fertilizer could significantly improve the fresh leaf weight, fresh root weight, and chlorophyll content and promote its growth. However, the effects of P and K fertilizers on the trait development of red radish at the adult stage were not obviously. Therefore, when red radish is cultivated, N fertilizer should be applied, and P and K fertilizers are not used or applied at a lower level. Fertilizer requirement characteristics of individual varieties should be considered when different amount of nitrogen fertilizers are applied.