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以台湾苗栗红壤上发育的水稻土为研究对象,采用室内培养的方法,研究了棘孢木霉菌及配施秸秆与氮肥对土壤速效磷和速效氮含量的影响,以期了解棘孢木霉菌对台湾地区红壤性水稻土的培肥效果,同时为棘孢木霉菌在农业土壤肥力方面的应用提供合理依据。结果表明:(1)添加棘孢木霉菌可提高台湾地区红壤性水稻土速效磷含量0.65~1.81 mg kg~(-1),并在第35 d时达到最大值5.74 mg kg~(-1)(P<0.05),明显高于秸秆和氮肥单独施用的效果。红壤性水稻土速效磷含量对棘孢木霉菌与秸秆和尿素配合施用的响应最大,增幅范围为2.09~3.37 mg kg~(-1),培养21 d时速效磷含量达到最大值8.08 mg kg~(-1)(P<0.05)。(2)单独添加棘孢木霉菌对台湾地区红壤性水稻土速效氮含量没有产生有效影响,与试验预期效果不符。棘孢木霉菌及配施秸秆与两种氮肥(尿素和硫酸铵)施用对红壤速效氮含量有一定的提升影响,增幅范围分别为8.07~34.73 mg kg~(-1)和28.62~52.46 mg kg~(-1),分别在培养28 d和42 d时达到速效氮含量最大值36.88和54.57 mg kg~(-1)(P<0.05)。红壤性水稻土速效氮含量对单施硫酸铵的响应最好,增幅范围为32.54~59.21 mg kg~(-1),培养35 d时速效氮含量最大值为61.06 mg kg~(-1)(P<0.05)。试验成果为棘孢木霉菌及配施秸秆与氮肥应用于土壤营养改良提供理论参考。
Taking paddy soil developed on the red soil of Miaoli, Taiwan as the research object, the effects of the cloning of Trichoderma sp. And its application of straw and nitrogen on soil available and available N were studied by indoor culture in order to understand the effect of Trichoderma sp. And to provide a reasonable basis for the application of Trichoderma sporelli in the application of agricultural soil fertility. The results showed that: (1) Trichoderma sphaeroides was added to increase available phosphorus (P) 0. 05-1 .81 mg kg -1 in red paddy soils in Taiwan and reached a maximum of 5.74 mg kg -1 on the 35th day, (P <0.05), which was significantly higher than that of straw and nitrogen fertilizer alone. The available P content of red paddy soil had the highest response to the combination of Trichoderma sphaeroides with straw and urea, ranging from 2.09 to 3.37 mg kg -1, and the maximum available phosphorus reached 8.08 mg kg ~ (-1) (P <0.05). (2) Trichoderma sp. Alone did not produce any significant effect on the content of available nitrogen in paddy soils derived from paddy soils in Taiwan, which was inconsistent with the predicted results. Echinochloa crus-galli and straw application with two nitrogenous fertilizers (urea and ammonium sulfate) increased the available nitrogen content in red soil by 8.07 ~ 34.73 mg kg -1 and 28.62 ~ 52.46 mg kg -1, respectively ~ (-1) respectively, reaching the maximum values of 36.88 and 54.57 mg kg -1 (P <0.05) at 28 d and 42 d respectively. The available nitrogen content of red paddy soil had the best response to ammonium sulfate alone, ranging from 32.54 to 59.21 mg kg -1, and the maximum available nitrogen was 61.06 mg kg -1 (-1) at 35 d P <0.05). The test results provide theoretical reference for the application of Staphylococcus acremonium and the application of straw and nitrogen fertilizer in soil nutrient improvement.