化肥减量配施菌解小分子鱼肽肥对毛竹冬笋产量及品质的影响OA

To address the problems of decreased bamboo shoot quality and environmental pollution caused by the long-term ex-cessive application of chemical fertilizers in Phyllostachys edulis shoot-producing forests,reduce chemical fertilizer usage,and cultivate high-quality winter bamboo shoots,microbial hydrolyzed small-molecule fish peptide fertilizer(abbreviated as fish peptide fertilizer)was combined with chemical fertilizers.Three fertilization treatments were set up:T1(chemical fer-tilizer application at 375kg·hm-2),T2(chemical fertilizer at 187.5 kg·hm-2+fish peptide fertilizer at 75 L·hm-2),and T3(fish peptide fertilizer at 150 L·hm-2).The yield,nutrients,flavor substances,and amino acid contents of P.edulis winter bamboo shoots were determined to analyze the effects of reduced chemical fertilizer combined with fish peptide fertilizer on the yield and quality of winter bamboo shoots.The results showed that with the increase in the replacement ratio of fish peptide fertilizer to chemical fertilizer,the yield of winter bamboo shoots first increased and then decreased,and the yields in T2 and T3 treatments were significantly higher than that in T1.The contents of starch,soluble protein,and total amino acids in winter bamboo shoots gradually increased,while the soluble sugar content first increased and then de-creased.The contents of starch,soluble sugar,and soluble protein in T2 and T3 treatments were significantly higher than those in T1,but there was no significant difference in total amino acid content among all treatments.The contents of total acid,tannin,total flavonoids,cellulose,and lignin gradually decreased,and those in T3 treatment were significantly lower than those in T1.The ratio of soluble sugar to total acid content and the content of sweet amino acids significantly in-creased,while the proportion of bitter amino acids significantly decreased.Comprehensive evaluation of winter bamboo shoot quality indicated that the comprehensive quality indices of T2 and T3 treatments were significantly higher than that of T1,but there was no significant difference between T2 and T3.Reducing chemical fertilizer application combined with mi-crobial hydrolyzed small-molecule fish peptide fertilizer can significantly improve the yield and nutritional quality of P.edu-lis winter bamboo shoots and enhance their palatability.Considering the yield and quality comprehensively,the treatment of replacing 50%chemical fertilizer with microbial hydrolyzed small-molecule fish peptide fertilizer(T2)can be popularized and applied in practical production.