【摘要】 本试验采用田间滴灌方式，以‘凤丹’为材料，设置施用牡丹专用液体肥(NPK)、牛羊粪提取物液态有机肥(L1)、玉米秸秆提取物液态有机肥(L2)、蚯蚓粪提取物液态有机肥(L3)、海藻提取物液态有机肥(L4)、鱼虾提取物液态有机肥(L5)处理，以不施肥为对照(CK),研究不同液态有机肥对牡丹籽粒脂肪酸组分、土壤有机碳组分及微生物功能多样性的影响。结果表明，‘凤丹’中共检测到15种脂肪酸，包含8种饱和脂肪酸(C10∶0、C12∶0、C14∶0、C16∶0、C18∶0、C20∶0、C22∶0、C24∶0)、4种单不饱和脂肪酸(C14∶1、C16∶1、C18∶1、C20∶1)以及3种多不饱和脂肪酸(C18∶2、C18∶3n3、C20∶5n3),其中L1处理的亚油酸与α-亚麻酸含量最高，较其他处理分别提高0.532～8.040个、0.956～8.431个百分点。液态有机肥处理提高了籽粒脂肪酸、土壤碳含量及土壤微生物碳利用效率与能力；且L1处理下土壤总有机碳(SOC)和活性有机碳组分(MBC、DOC、ROC)含量、平均颜色变化率、6种微生物碳源类型利用强度及香农指数均具有较大值。冗余分析表明，土壤有机碳指标(SOC、MBC、DOC、ROC)与6种微生物碳源类型均呈正相关。综上，施用牛羊粪提取物液态有机肥可有效提高土壤总有机碳和活性有机碳含量及微生物碳利用效率，促进α-亚麻酸与亚油酸为主的脂肪酸合成，是种植油用牡丹的最优液态肥。更多还原

【Abstract】 The effects of different liquid organic fertilizers on fatty acid compositions of oil peony seeds, soil organic carbon compositions and microbial functional diversity were studied by drip irrigation experiment in field. ’Fengdan’ peony was used as material, and the treatments were set as special liquid fertilizer for peony(NPK), liquid organic fertilizer of cow and sheep manure extract(L1), liquid organic fertilizer of corn straw extract(L2), liquid organic fertilizer of vermicompost extract(L3), liquid organic fertilizer of seaweed extract(L4), liquid organic fertilizer of fish and shrimp extract(L5), with no fertilization as control(CK). The results showed that a total of 15 fatty acids were detected out in ’Fengdan’, including 8 saturated fatty acids(C10∶0, C12∶0, C14∶0, C16∶0, C18∶0, C20∶0, C22∶0, C24∶0), 4 monounsaturated fatty acids(C14∶1, C16∶1, C18∶1, C20∶1) and 3 polyunsaturated fatty acids(C18∶2, C18∶3n3, C20∶5n3). The contents of linolenic acid and α-linoleic acid were the highest under L1 treatment, which increased by 0.532 to 8.040 and 0.956 to 8.431 percentage points compared with the other treatments. Liquid organic fertilizer treatments increased grain fatty acids and soil carbon contents and soil microbial carbon utilization efficiency and ability. The contents of total organic carbon(SOC) and active organic carbon components(MBC, DOC, ROC), average color change rate, utilization efficiency of six microbial carbon source types and Shannon index of soil were larger under L1 treatment. The redundancy analysis results showed that soil carbon indicators(SOC, MBC, DOC, ROC) were positively correlated with the six carbon source types. In summary, the application of liquid organic fertilizer of cow and sheep manure extract could effectively increase soil active organic carbon content and microbial carbon utilization efficiency, and promote synthesis of fatty acids mainly composed of α-linolenic acid and linoleic acid, so it was the optimal liquid fertilizer treatment for oil peony planting.更多还原