肥料、菌剂与地膜绿色投入品组合对土壤无机氮与花生产量的影响

Effects of Green Input Combination of Fertilizer,Bacterial Agent and Plastic Film on Soil Inorganic Nitrogen and Yield of Peanut

为了探究不同绿色投入品对土壤铵态氮、硝态氮和花生生长的调控作用,本研究设置肥料(腐殖酸复合肥A1和普通肥料A0)、土壤调理剂(木霉复合菌剂B1和清水对照B0)、地膜(生物降解地膜C1和普通地膜C0)三因素组合试验,共8个处理。结果表明:随着生育时期的推进,土壤NH4-N和NO3-N含量呈现逐渐降低趋势。0~20cm土层中,A0B0C0处理的平均NH4-N含量高于其他处理,而A1B1C1处理的NO3-N含量比A0B0C0增加了47.6%。20~40cm土层中,与A0B0C0相比,A0B0C1处理的NH4-N含量和A1B1C1处理的NO3-N含量分别增加了14.6%和31.9%。40~60cm土层中,A0B0C0处理的平均NH4-N含量高于其他处理,而A1B1C1处理的NO3-N含量比A0B0C0增加了82.4%。与A0B0C0相比,A0B1C0处理的花生荚果干质量、单株叶干质量和产量分别增加了16.3%、20.4%和40.9%,A0B1C1处理的主茎长和单株茎干质量分别增加了12.4%和12.3%,A1B1C1处理的花生第一侧枝长和产量分别增加了15.2%和40.2%。综合结果表明:A0B0C0和A1B1C1分别有利于土壤中NH4-N和NO3-N含量的提高,A1B1C1和A0B1C0处理更有利于花生氮素营养改善和产量提升。

In order to explore the effects of different green inputs on soil ammonium and nitrate contents and peanut growth,three factors including fertilizer(humic acid composite fertilizer A1and common fertilizer A0),soil conditioner(Trichoderma composite bacterial agent B1and water spraying B0),and plastic film(biodegradable plastic film C1and PE plastic film C0),with a total of eight treatments were set up in this study.The results showed that as the growth period progressed,the contents of NH4-N and NO3-N in the soil showed a gradually decreasing trend.In the 0~20cm soil layer,the average NH4-N content of A0B0C0treatment was higher than other treatments,and the NO3-N content of A1B1C1treatment increased by 47.6%compared to A0B0C0.In the 20~40cm soil layer,compared with A0B0C0,the NH4-N content of A0B0C1treatment and the NO3-N content of A1B1C1treatment increased by 14.6%and 31.9%,respectively.In the 40~60cm soil layer,the average NH4-N content of A0B0C0treatment was higher than other treatments,and the NO3-N content of A1B1C1 treatment increased by 82.4%compared to A0B0C0.Compared with A0B0C0,the dry mass of peanut pods,single plant leaves and yield of A0B1C0treatment increased by 16.3%,20.4%and 40.88%,respectively;the main stem height and stem dry mass of A0B1C1treatment increased by 12.4%and 12.3%,respectively;and the first lateral branch length and yield of A1B1C1treatment increased by 15.2%and 40.23%,respectively.The comprehensive results indicated that soil NH4-N content under A0B0C0and soil NO3-N contentunder A1B1C1were higher than those of other treatments.A1B1C1and A0B1C0treatments weremore conducive to improving nitrogen nutrition and yield of peanut.