海藻叶面肥对菠菜和不结球白菜产量和品质的影响

Effects of seaweed foliar fertilizers on yield and quality of spinach and pakchoi

海藻叶面肥是以海藻为原料,经不同加工工艺制成的一类叶面肥品种。采用塑料大棚和露地种植方式,研究了8种海藻叶面肥对菠菜和不结球白菜产量和品质的影响。结果表明,8种海藻叶面肥对菠菜和不结球白菜都有不同程度的增产效果,大多数叶面肥增产10%以上,其中增产效果最明显的是海带浆型叶面肥,其次是甘露醇型和赤霉素型叶面肥。叶面喷施海藻叶面肥对菠菜和不结球白菜中的可溶性蛋白基本没有影响,可明显提高其可溶性糖和Vc含量,降低其硝酸盐含量。

Seaweed foliar fertilizer is one species of foliar fertilizer made by different processing technics,used seaweed as extracting material.In this experiment,effects of 8 species of seaweed foliar fertilizers,for instance,mannite,amino acid,alginate,iodine,indole butyrate,gibberellin,Laminaria japonica slurry and Entermorpha prolifera slurry foliar fertilizers,on yield and quality of spinach（Spinacia oleracea L.） and pakchoi（Brassica campestris L.ssp.Chinensis Makino var.communis Tsen et Lee） were investigated at plastic shed and open-field growing.The results showed that 8 species of seaweed foliar fertilizers increased obviously the yields of spinach and pakchoi,generally increasing over 10%.Laminaria japonica slurry fertilizer increased most obviously the yield of spinach and pakchoi,and then mannite and gibberellin foliar fertilizers.Spraying seaweed foliar fertilizers could remarkably increase the contents of soluble sugar and Vc,decrease nitrate content and not change soluble protein content in spinach and pakchoi.