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为高效降解秸秆和腐解油菜病原菌菌核(Sclerotinia sclerotiorum de Bary),研制出由棘孢曲霉(Aspergillus aculeatus)和哈茨木霉(Trichoderma harzianum)孢子悬浮液配制的复合液体菌剂和由哈茨木霉和枯草芽孢杆菌(Bacillus subtilis)与菜籽饼和油菜秸秆进行发酵所得的固体复合生物肥料,通过盆栽模拟试验,分析复合生物制剂腐解秸秆和油菜病原菌菌核的效率,测定其对盆栽土壤的影响。结果发现,与基质对照相比,油菜和水稻秸秆腐解率分别提高15.07%和5.81%,菌核萌发率分别下降20.98%和12.28%;复合生物制剂腐解的秸秆可显著提高土壤酸性磷酸酶和脲酶活性。利用水稻秸秆还田并施用复合生物肥料可显著提高油菜产量,油菜籽比空白对照增产9.6%。
In order to efficiently degrade the straw and decompose the Sclerotinia sclerotiorum de Bary, a composite liquid bactericide prepared from a spore suspension of Aspergillus aculeatus and Trichoderma harzianum, And Bacillus subtilis and rapeseed cake and rape straw were studied. The pot experiment was conducted to analyze the efficiency of the composite biological preparation in decomposing the sclerotium of stalk and rape pathogen, influences. The results showed that compared with the control, the decomposition rates of rapeseed and rice straw increased by 15.07% and 5.81%, respectively, and the germination rate of sclerotia decreased by 20.98% and 12.28%, respectively. Straw decomposed with composite biological agents significantly increased soil acid phosphatase And urease activity. The application of rice straw to the field and the application of compound biological fertilizer can significantly increase the yield of rapeseed, rapeseed increased by 9.6% than the blank control.