【摘要】 以连作8年黄瓜的温室土壤为研究对象,设计了4种栽培制度,除CS3早春茬种植番茄外,其它处理传统两茬均为黄瓜,以传统两季种植。夏季休闲处理为对照,进行3年的盆栽试验,采用第3年夏茬后数据评价不同栽培制度对土壤微生物功能结构多样性,碳源利用,微生物量碳、氮和秋冬茬黄瓜产量的影响。结果表明,连作黄瓜土壤夏季填闲大蒜(CS4)、茼蒿(CS2)、菠菜—白菜(CS3)后微生物群落功能多样性、均匀度和Biolog ECO板每孔平均颜色变化率(AWCD)相对于对照均显著增加,其72 h AWCD值分别增加了57.0%、26.1%、57.2%,在主成份1和主成份1至3加权上,对照与其他处理存在显著差异;CS2、CS3、CS4在多聚物和碳水化合物的利用上显著高于对照,且CS2对芳香类化合物的利用显著高于其他处理;CS2、CS3、CS4微生物量C/N分别为14.4、14.9、9.3,显著高于对照;且CS2与CS4显著增加了秋冬茬黄瓜的产量。综合结果表明:CS2、CS3、CS4均能显著改变土壤微生物碳源,从而改变微生物群落的组成及其对土壤碳源的利用。更多还原

【Abstract】 The soil continuous cropping cucumber 8 years was as material,4 different cultivation systems were designed,excepting the tomato was planting in the early spring season in CS3 and cucumber was in the traditional two season.The experiment was carried by pot experiment 3-year.The summer season data in third year was used to examine the effect of four different cultivation systems on soil microbial function structure diversity,carbon sources,microbial biomass C and N,and autumn winter season cucumber yield.The results showed that,catching garlic(CS4),crown daisy(CS2)and spinach-chinese cabbage(CS3)could significantly increase microbial community function structure diversity,evenness and Average well color develop(AWCD)comparing to control.The AWCD value in the 72 h were increased by 57.0%,26.1%,57.2% separately.Principal component 1 and 1 to 3 weighting,control was obviously differed from other cultivation systems.Comparing to control,the utilization of polymer and carbohydrate by CS2,CS3,CS4 were significantly higher,and their microbial biomass C/N were 14.4,14.9,9.3,also significantly higher than control,the utilization of phenolic compounds by CS2 was significantly higher than others,and CS2 and CS4 increased autumn winter cucumber yield as well as.Sum the results up,CS2,CS3 and CS4 could change the carbon sources significantly,thus change the component of microbial community and the utilization of carbon sources.更多还原