锌肥对日光温室西芹硝酸盐及营养品质研究

Effects of Zn levels on nitrate uptake and nutritional quality of celery

利用日光温室西芹不同锌水平的试验 ,研究了以氮、钾肥作基肥时 ,不同锌水平对西芹硝酸盐累积、营养品质及产量的影响。结果表明 ,当施用硫酸锌 30 kg/ hm2 ,西芹的产量达到最高 ,而硝态氮含量与 CK相比 ,叶片和叶柄分别降低2 8.6%和 2 9.5% ,施用锌肥可以提高 Vc的含量 ,对可溶性糖的影响不大。

The effects of different Zn levels on the yield,quality and nitrate uptake of celery in the green house were studied.The results showed that the maximum yield of celery was reached at 30kg/hm\+2 zone of zinc sulfate.Meanwhile,the nitrate contents of the leaf and the petiole were reduced by 28.6% and 29.5%.Application of Zn fertilizer could increase contents of Vc.However,little influence was found on soluble sugar.