磷肥对黄秋葵生长与产质量及植株氮磷钾吸收的影响

Effects of Phosphorus on Growth and Yield and Quality and Absorption of Nitrogen,Phosphorus and Potassium of Okra

采用田间试验的方法,研究不同施磷量对黄秋葵生长、产量、品质及植株氮磷钾含量的影响。结果表明,施磷能显著提高黄秋葵株高、茎粗及叶数等生长发育指标(P<0.05)。施磷处理黄秋葵产量高于不施磷处理,随施磷量的增加,产量先增加后下降,当P_2O_5施用量为50 kg/hm^2时增产幅度最大。施磷还提高了黄秋葵可溶性糖、V_C及黄酮等品质指标,以P_2O_5施用量为25~50 kg/hm^2时品质较好。适量施磷也有利于黄秋葵植株氮磷钾含量的提高。因此,综合产量及品质等指标,黄秋葵较适宜的施磷量为50 kg/hm^2。

A field experiment was conducted to study the effects of phosphorus application on okra growth, yield, quality and contents of nitrogen, phosphorus and potassium.The results showed that the phosphorus could significantly increase the plant height, stem diameter and leaf number of okra （P〈0.05）.Yield of phosphorus treatment was higher than no phosphorus treatment.The yield was first increased and then decreased with the increase of phosphorus application,and it reached the highest at amount of P205 50 kg/hm^2.Phosphorus application also increased the soluble sugar content,Vc content and flavonoids content.The okra would have better quality when the phosphorus amount was P20s 25~50 kg/hm^2.Proper phosphorus was benefit to increase of the contents of nitrogen, phosphorus and potassium of okra at the same time.So, phosphorus amount of 50 kg/hm^2 was suitable for okra.