铁锌混合肥喷施对豌豆子粒铁、锌、可溶性糖和维生素C含量的影响

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

田间小区试验条件下,研究了喷施不同组合的铁锌混合肥对豌豆子粒(Pisum sativumL)中铁、锌含量及其营养品质的影响。结果表明,喷施含铁混合肥(0.1%FeSO4+0.2%腐殖酸+0.5%尿素)能显著提高豌豆子粒中Fe含量,但对其累积Zn有不利影响;喷施含锌混合肥(0.2%ZnSO4+0.1%腐殖酸+0.5%尿素)能显著增加豌豆子粒中Zn含量,但对其累积Fe亦有一定的抑制作用。本试验条件下,豌豆子粒铁锌混合肥最优肥料组合为:0.1%FeSO4+0.2%ZnSO4+0.2%腐殖酸+0.5%尿素。铁锌混合肥不但能显著提高豌豆子粒中铁、锌的含量,还能显著提高维生素C和可溶性糖的含量,降低硝态氮的含量,改善营养品质。

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.