【摘要】 为了开发能够缓解黄瓜连作障碍的微生物有机肥,提高连作土壤黄瓜生产率和品质。采用不同浓度和比例的拮抗菌枯草芽孢杆菌、舒展曲霉和以鸡粪为主发酵而成的有机肥混合成微生物有机肥,应用于连作障碍黄瓜的生产上。结果表明,微生物有机肥能够取代化肥满足黄瓜生长期间的养分需求,能抑制黄瓜病害的发生,发病率比对照和化肥处理分别下降47.4%~69.6%和58.7%~57.6%,同时,微生物有机肥能极大地提高黄瓜Vc和可溶性糖含量,大幅度减少硝酸盐在黄瓜果实中的残留和积累,以有机肥中含有枯草芽孢杆菌108cfu/g、舒展曲霉活孢子105cfu/g处理效果最好,每株黄瓜植株施用500 g最佳,与化肥处理相比,黄瓜Vc和可溶性糖分别提高66.3%和31.9%,而硝酸盐含量下降95%。更多还原

【Abstract】 Microbial organic fertilizer was developed to tackle or control long-time monocropping disorder for cucumber in soil to increase soil productivity and cucumber quality. Different concentrations and ratios of antagonistic microbes,Bacillus subtilis and Aspergillus effusus Tiraboschi,mixed with chicken-based fermented organic fertilizer were investigated to control long-time monocropping for cucumber in soil.Results showed microbial organic fertilizer can substitute chemical fertilizer for cucumber growth in requirements for nutrients. Microbial organic fertilizer inhibited wilt incidence of cucumber,the incidence rate was decreased by 47. 4%- 69. 6 % and 58. 7%- 57. 6 % compared to treatments in CK and chemical fertilizer. Furthermore,microbial organic fertilizer greatly raised the content of Vc and soluble sugar in cucumber fruit and deeply reduced the content of NO-3in cucumber. Compared to treatment of chemical fertilizer,the optimal microbial organic fertilizer was the combinations of Bacillus subtilis 108cfu / g and Aspergillus effusus Tiraboschi viable spore 105cfu / g with application rate of500 g per plant,Vc and soluble increased by 66. 3 and 31. 9 % respectively,while the nitrate declined by 95 %.更多还原