中国农业大学

The pathogen of cucumber powdery mildew is Sphaerotheca cucurbitae or Erysiphe cucurbitacearum, according to "Fauna Sinica of Fungi, Erysiphales". But in this study, it was identified by morphologic characters as Sphaerotheca fuliginea by providers in College of Agriculture and Biology, Shanghai Jiaotong University.

黄瓜白粉病的病原菌据《中国真菌志，白粉菌目》记载存在两种，分别为瓜类单囊壳和葫芦科白粉菌，但上海地区致病的病原菌据上海交通大学农业与生物学院植物病理研究室形态鉴定为Sphaerotheca fuliginea。

Horn F P%Hodson J%Mot J J%Brougham R W Grazing-land research at plant-animal interface USAD Office of International Cooperation and Development and USDA Agricultural Research Service Published by Winrock Internaional , 1987,null

任继周%朱兴运中国河西走廊草地农业的基本格局和它的系统相悖——草原退化的机理初探 10.3321/j.issn：1004-5759.1995.01.002 草业学报， 1995，(01)韩士杰%廖利平%姜凤歧关于森林界面生态学的思考应用生态学报， 1998，(05)安树青生态学词典哈尔滨：东北林业大学出版社， 1994，null

Institute of Soil Science, CAS , Nanjing 210008 , China; 2 Henan Agric.

中国科学院南京土壤研究所，江苏南京210008； 2 河南农业大学，河南郑州450002

Dept. of Natural Resources and Environmental Science;Nanjing Agric.

南京农业大学自然资源与环境科学院南京 210014；中国科学院南京土壤研究所；安徽省怀远县鲍集农技站

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。