温室黄瓜连作土壤微生物区系和养分含量变化  

Variation of Microflora and Nutrient Content in Cucumber Rhizosphere of Continuous Cropping in Greenhouse

作　　者：闫敏[1] 庞金梅[1] 焦晓燕[1] 武爱莲[1] 王立革[1] 王劲松[1] 

机构地区：[1]山西省农业科学院农业环境与资源研究所,山西太原030006

出　　处：《山西农业科学》2012年第12期1296-1298,共3页Journal of Shanxi Agricultural Sciences

基　　金：山西省回国留学人员科研资助项目(200988);山西省农业科学院重点招标项目(YZD0907)

摘　　要：以日光温室黄瓜连作1～3,4～7,8～10 a的土壤为研究对象,测定土壤微生物数量和养分含量。结果表明,连续种植4～7 a的土壤中微生物总数最多,达4.7×107cfu/g;8～10 a的最少,为2.2×107cfu/g;随连作年限的增加,细菌数量表现出先增加后减少的趋势,在连作4～7 a的土壤中达到最大值,为4.2×107cfu/g;放线菌的数量表现为逐年减少的趋势;真菌数量随连作年限的增加呈增长趋势。而土壤氮、磷、钾含量随连作年限的增加逐年增多,但氮的投入不足,磷的投入适中,钾肥投入过量。Study was carried out on the effects of 1～3,4～7,8～10 years continuous cropping cucumber soil on the microbial quantities and nutrient content in greenhouse.The microbe quantity in the soil of continuous cropping for 4～7 year was the most,reaching 4.7×107 cfu/g dry soil and that in soil for 8～10 year was the least,2.2×107 cfu/g dry soil.With the rise of continuous cropping years,the quantity of bacteria showed the trend of first increasing and later decreasing,but reached the biggest value at 4～7 years,4.2×107 cfu/g dry soil.The actinomycetes quantity showed a decreasing trend and the fungi increasing.The nutrient content in cucumber soil showed a increasing trend.The nitrogen input was short,phosphate moderate,and potassic excessive.

关 键 词：黄瓜 连作 土壤微生物 养分 

分 类 号：S642.2[农业科学—蔬菜学]