Effect of foliar application of iron,zinc mixed fertilizers on the content of iron,zinc,soluble sugar and Vitamin C in green pea seeds

Effects of foliar application of ferrous sulphate,zincic sulphate,urea and humic acid(HA) mixed fertilizers on the Fe,Zn content and the nutritional quality indexes such as Vitamin C,soluble sugar,and nitrate contents in green pea(Pisum sativum L) seeds were studied with series of field trials.The results showed that the ferrous sulphate,urea and humic acid mixture(0.1%FeSO4+0.2%HA+0.5%Urea) could significantly increase iron content in green pea seeds,but adversely affect zinc accumulation.The zinc sulphate,urea and humic acid mixture(0.2%ZnSO4+0.1% HA +0.5% Urea) could enhance markedly zinc content in green pea seeds but adversely affect iron absorption.And the most appropriate formula of iron and zinc mixed fertilizer recommended was 0.1% FeSO4+0.2%ZnSO4+0.2% HA +0.5% Urea.Ferrous sulphate,zincic sulphate,urea and humic acid mixed fertilizer could enhance notably the content of iron and zinc,Vc and the soluble sugar content in green pea seeds and evidently lower the content of NO3--N.Hence,the nutritional quality of green pea seeds was greatly improved.