生物有机肥对枸杞产量、品质及土壤性状的影响

【目的】比较化肥、有机肥和生物有机肥对枸杞产量、品质及土壤性状的影响,为改善枸杞品质及提升枸杞园土壤肥力提供科学依据。【方法】设置化肥、50%化肥配施有机肥和50%化肥配施不同生物有机肥共4个处理,测定化肥减施条件下配施生物有机肥对枸杞产量、品质及土壤性状的影响。【结果】施用生物有机肥后,枸杞产量比对照增加3.6%~7.4%,差异不显著;枸杞可溶性固形物、百粒重、枸杞多糖、总糖含量分别提高9.6%~9.4%、10.5%~20.2%、29.8%~50%、41.8%~60.2%;土壤pH值降低7.2%~8.6%,有机质含量提高26.8%~31.8%,速效氮磷钾分别提高27.7%~41.6%、26.3%~34.2%、26.9%~33.3%;细菌数量显著上升,真菌数量显著下降。【结论】化肥减施条件下,配施生物有机肥对枸杞产量无显著影响,但可显著提升枸杞品质和土壤养分,并可明显优化土壤微生物种群结构。

Effects of Bio-organic Fertilizer on Yield and Quality of Lycium barbarum L. and Physicochemical Properties of Soil

【Objective】 In order to compare the effects of different fertilization on the yield and quality of Lycium barbarum L. and physicochemical properties of soil, a field experiment was conducted. 【Method】 Four treatments including chemical fertilizer(CK), 50% chemical fertilizer combined with organic fertilizer(T1), 50% chemical fertilizer combined with S13 bio-organic fertilizer and 50% chemical fertilizer combined with NCD-2 bio-organic fertilizer(T3) were carried out. The yield and quality of Lycium barbarum L. and physicochemical properties as well as microbial population and diversity of soil were analyzed.【Result】 The results showed that after applying bio-organic fertilizer, the contents of soluble solid, 100-grain weight, polysaccharide and total carbohydratewere were increased by 9.6%-9.4%, 10.5%-20.2%, 29.8%-50% and 41.8%-60.2%, respectively and the pH value was decreased by 7.2%-8.6%; The content of soil organic matter was increased by 26.8%-31.8%, and the content of available NPK was increased by 27.7%-41.6%, 26.3%-34.2% and 26.9%-33.3%, respectively; The number of bacteria increased and the number of fungi decreased significantly.【Conclusion】 This study found that 50% chemical fertilizer combined with bio-organic fertilizer had no significant effect on the yield of Lycium barbarum L., but could improve the quality of Lycium barbarum L. and soil nutrients significantly, and optimize the microbial community structure of soil obviously.