1·This paper introduces three kinds of bacteria which are the most hazardous for oilfield water injection, namely sulfate reducing bacteria, iron bacteria and saprophytic bacteria.
油田注入水中硫酸盐还原菌、铁细菌、腐生菌是危害最大的细菌，这三种细菌特性各异，相互之间还存在一定的联系。
2·This paper introduces three kinds of bacteria which are the most hazardous for oilfield water injection, namely sulfate reducing bacteria, iron bacteria and saprophytic bacteria.
摘要油田注入水中硫酸盐还原菌、铁细菌、腐生菌是危害最大的细菌，这三种细菌特性各异，相互之间还存在一定的联系。
3·On the stem foots of wheat plant, more than 90% of the nematodes identified was saprophytic nematode, others were plant-parasitic nematode and predatory nematode.
经初步识别，小麦茎基部的线虫中90%以上为腐生线虫，少数为植物寄生线虫和捕食线虫。
4·On both the ripening paddy and the paddy fresh harvested and stored, we find the symbiotic and parasitic field fungi to be the dominant while saprophytic storage fungi are seldom discovered.
黄熟期稻谷和新收入库稻谷上，均以兼寄生的田间真菌为优势菌，腐生的储藏真菌极少。
5·P. ostreatus and C. comatus could decrease the individual density of plant parasites, increase the the individual density of saprophytic nematodes.
毛头鬼伞、粗皮侧耳能有效降低植物寄生线虫的个体密度，提高腐生线虫的个体密度。