沼肥对无土栽培草莓产量和品质的影响

Effect of Biogas Fertilizer on Yield and Quality of Strawberry in Soilless Culture

通过盆栽试验,研究沼肥对温室无土栽培草莓产量和品质的影响。试验以1:1的泥炭和珍珠岩混合物为栽培基质,设施沼肥组和施化肥组,每组设置3个施肥水平,相同施肥水平的沼肥组和化肥组栽培基质含等量的氮、磷、钾。研究结果表明,在2L栽培基质中施用100、200和300g沼肥,与施用化肥相比可使草莓产量分别提高24.37%、32.00%和50.23%,还原糖分别提高51.96%、80.84%和79.26%,维生素C分别提高35.86%、41.86%和39.28%,硝酸盐分别降低84.51%、89.99%和92.28%。因此,沼肥用于无土栽培草莓不仅可以提高草莓产量,还可显著改善其品质,对发展无公害绿色农业具有重要的意义。

Pot experiment was carried out to study effect of biogas fertilizer on yield and quality of strawberry in soilless culture in greenhouse.In experiment,mixture of turf and perlite of 1:1 ratio was used as substrate of culture.Taking biogas fertilizer group and chemical fertilizer group as case,each fertilizer group included three fertilization levels,and content of nitrogen,phosphorus and potassium of biogas fertilizer was equal to that of chemical fertilizer under same fertilization level.Results showed that compared with fertilizing chemical fertilizer,100,200 and 300g of biogas fertilizer were fertilized in 2 L substrate could make the yield of strawberry increased 24.37%,32.00% and 50.23%,respectively.Reductive sugar increased 51.96%,80.84% and 79.26%,respectively.Vitamin C increased 35.86%,41.86% and 39.28%,respectively.Nitrate decreased 84.51%,89.99% and 92.28%,respectively.So biogas fertilizer is fertilized in soilless culture not only increases yield of fruit but also remarkably improves its quality,and it is very important for developing innocuous and green agriculture.