Effect of different fertilization practices on yield,quality and nutrients uptake of watermelon in the gravel removal field
In order to select the suitable fertilization practices in the gravel removal field,using field comparative experi-ments,the effects of no fertilizers(CK),water-soluble macronutrient fertilizer,water-soluble macronutrient fertilizer+biological bacterial manure,and biogas slurry fertilizer on yield,nutrients uptake and quality of watermelon in the grav-el removal field were studied using watermelon cultivar Jincheng No.5 as the test crop.The results showed that the eco-nomic yield of watermelon was the highest under the treatment of water-soluble macronutrient fertilizer+biological bacterial manure,which was 51.4 t·hm-2.Water-soluble macronutrient fertilizer or it combined application of biological bacterial manure improved straw,fruit,and shoot nitrogen uptake of watermelon,while also significantly increased po-tassium uptakes in fruit and shoot.Nitrogen utilizationefficiency(31.2％)was highest by application of water-soluble macronutrient fertilizer,thus phosphorus(15.5％)and potassium(39.2％)utilization efficiencies were higher in treatment biogas slurry fertilizer.There is a significant and extremely significant positive correlation between total sugar,total ac-id,and vitamin C content in watermelon,respectively.Application of fertilizers improved atermelon quality,the obvious effects were in treatments water-soluble macronutrient fertilizer+biological bacterial manure.Therefore,comprehen-sive consideration of yield,nutrients uptake and quality of watermelon,it is high yield and quality by application of wa-ter-soluble macronutrient fertilizer or it combined application of biological bacterial manure in watermelon in the gravel removal field.
NETL
NSTL
万方数据
