氮、钾、锌肥配施对西芹产量和品质的影响

应用三因素随机区组排列设计方法，在日光温室内研究了太原地区石灰性褐土上施用尿素、氯化钾、硫酸锌对西芹养分的吸收、累积及产量和品质的影响。结果表明：①在日光温室里，单施氮肥或氮、钾、锌肥配施均能使西芹产量明显提高。②氮、钾、锌肥配施可提高西芹体内钾、锌、铁、锰的累积吸收量。③随着氮肥用量的适量增加，西芹产量明显提高，但对人体有害的成分ＮＯ３－Ｎ含量也随之增加；而配施钾、锌肥后，使西芹品质大为改善，Ｖｃ、可溶性糖含量增加，ＮＯ３－Ｎ累积吸收量减少。④施用锌肥，使西芹植株体内的锌含量增加，为人体补锌提供了植物载体。

Effect of Applying Nitrogen,Potassium and Zinc Fertilizer on Yield and Quality of Celery

Random arrange method with three factors was used to study the effect of Urea, Potassium chloride, Zinc sulphate on the adsorption and accumulation of nutriments, yields and quality of celery in Taiyuan, Shanxi. The results showed that: In the sunlight greenhouse, applying only Nitrogen or mixed Nitrogen, Potassium and Zinc fertilizer both can increase the yields of celery. Mixed Nitrogen, Potassium and Zinc can increase the adsorption of Potassium, Zinc, Iron and Manganese. The yields increase with the increasing of Nitrogen, but meanwhile, harmful NO3-N also increase. However, mixed Potassium and Zinc fertilizer with Nitrogen can greatly improve the quality of celery, showing the increasing of Vc and dissovling sugar and decreasing of NO3 -N. Applying Zinc fertilizer can increase Zinc in the body of celery and provide a carrier for Zinc in the body of people.