配方施肥对洋葱产量与品质的影响

Discussion on the Effect of Directions for Applying Fertilizer on the Output and Quality of Allium cepa L

针对目前生产中不平衡的施肥现状及不完善的栽培技术措施,通过田间试验研究施肥量、栽培定植密度、定植时间对产量与品质的影响,结果表明:对洋葱生产具有主要影响因素的是氮肥施用量,定植密度和钾肥施用量为次主要因素,磷肥施用量是次要因素。氮肥施用量主要对产量以及可溶性糖的含量有影响,要提高这些指标,可在一定范围内增施氮肥。钾肥施用量对维生素C含量影响较大。且在一定程度上呈现出正相关。经综合平衡法分析后,得出最优的栽培措施是氮肥施用量为40kg/667m2,定植密度为15cm×15cm,钾肥施用量为80kg/667m2,磷肥施用量为60kg/667m2。采用此栽培措施,洋葱产量高,品质优。

According to unbalance fertilizer condition and unperfective technical measure, through field test, researched the effect of fertilizer amount, planting density, field-planting time that enflaencing on the yield and quality. The results indicated： the main effect factor on Allium cepa L was N fertilizer, field planting density and K fertilizer were the second factor, and P fertilizer was the third factor. N fertilizer amount mainly effect on the output and solubility sugar content, if improving these indexes, should increase applying N fertilizer in particular range. The effect of K fertilizer amount on Vc content was bigger, and appeared direct proportion in particular degree. By using comprehensive balance analysis way, got the best cultivation measure that when N fertilizer amount was 40kg/667m^2 ,field planting density was 15×15cm^2 ,K fertilizer amount was 80kg/667m^2 ,P fertilizer amount was 60kg/667m. the output was high and the quality was excellent.