包膜控释BB肥对大葱产量、品质及养分含量的影响

Effects of Coated Controlled-release Blend Bulk Fertilizers on Yield,Quality and Nutrient Content of Scallion

通过大田试验,探索了不同养分比例的包膜控释BB肥及控释BB肥减量化施用对章丘大葱产量、品质及养分含量的影响。结果表明,本试验条件下,施肥能明显增加大葱产量,而在所有包膜控释肥处理中,以包膜控释肥Ⅱ处理的大葱产量最高,与习惯施肥相比,增幅为2.57%。施用包膜控释BB肥亦能显著提高大葱品质。包膜控释BB肥可以使大葱中Vc含量提高1.64%~14.29%,硝酸盐含量降低23.18%~39.71%。其中,以包膜控释肥Ⅱ在提高大葱Vc、降低硝酸盐含量方面效果最佳。在大葱养分含量方面,包膜控释肥Ⅰ处理的大葱吸氮量最高,包膜控释肥Ⅲ处理的大葱吸磷量最高,包膜控释肥Ⅱ处理的大葱吸钾量最高,但3种包膜控释肥处理之间差异不显著。

The effects of different coated controlled-release blend bulk fertilizers and decreasing coated controlled-release blend bulk fertilizers on scallion＇s yield,quality and nutrient content were studied by field experiment.The results showed that fertilizers could increase the scallion＇s yield.In all the coated controlled-release fertilizers,controlled-release fertilizer Ⅱ was the best which could improve the scallion＇s yield by 2.57% compared with traditional fertilizer.Scallion＇s quality was also improved after using coated controlled-release blend bulk fertilizers.Vc content was increased by 1.64%-14.29%,nitrate content was decreased by 23.18%-39.71%.The coated controlled-release fertilizer Ⅱ showed the best effect on Vc content improvement and nitrate content control.In all tested treatments of fertilizers,the highest contents of nitrogen,phosphorus and potassium in scallion were detected in the coated controlled-release fertilizer Ⅰ,Ⅲ and Ⅱ,respectively.But there was no significant difference in three coated controlled-release fertilizers.