盆栽条件下不同氮磷钾养分配比的水溶性肥料对油菜产量、品质及养分吸收的影响

Effect of different N,P and K ratios of water soluble fertilizer on yield,quality and nutrient absorption of rape under the potted condition

水溶性肥料的氮磷钾养分比例是影响作物产量与品质的关键因素。采用盆栽方法,研究了不同氮磷钾养分配比的水溶性肥料配方对油菜产量、品质、养分吸收及肥料回收率的影响。试验结果表明,与不施肥对照(清水)相比,水溶性肥料能将油菜的产量提高3.55~4.56倍。在不同养分配比中,配比T3(1∶0.4∶0.8)油菜产量最高,比传统配比T2(1∶0.5∶1)提高4.24%,硝酸盐含量比传统配比降低27.38%,肥料养分的回收率最高,为本次盆栽试验条件下的最佳水溶性肥料配比。

The NPK ratio of water soluble fertilizer is the key factor affecting crop yield and quality. The experiment was carried out to investigate the effects of different nutrient ratios of water soluble fertilizer on yield,quality,nutrient absorption and fertilizer recovery rate of rape by potted planting methods. The results showed that compared with the treatment without fertilizer（ water）,water soluble fertilizer increased rape yield by 3. 55 - 4. 56 times. In different NPK ratios,the N∶ P_2O_5∶ K_2O ratio of1∶ 0. 4∶ 0. 8 was the best NPK ratio under this potted experiment conditions,which had the highest rape yield and highest fertilizer recovery rate,and the yield increased by 4. 24% and nitrate content reduced by 27. 38% than the traditional ratio T2（ 1∶ 0. 5∶ 1）.