选用特特普、珍龙１３、四丰４３、东农３６３、关东５１、合江１８和丽江新团黑谷等７个中国鉴别品种，对相同菌株在不同条件下的小种鉴定作了研究，结果表明接种体浓度和施肥水平对小种鉴定结果有较大影响，在小种鉴定中应多施氮肥以保稻苗嫩绿，同时接种的孢子浓度应在２Ｏ万／ｍｌ左右，以保证稻瘟病菌生理小种鉴定的准确性和可靠性。 Seven Chinese identification cultivars including Teopu, Zhenlong 13, SiFeng 43, Dongnong 363, Kanto 51, Hejiang 18 and Lijiang Xintiaoheigu were selected to study the identification of the same strains under different conditions , The results showed that inoculum concentration and fertilization levels have a greater impact on the identification of races in the identification of species should be more nitrogen fertilizer to ensure that rice seedlings green, while inoculated spores concentration should be 2O million / ml, in order to ensure that rice Accuracy and Reliability of Identification of Physiological Races of Magnaporthe grisea.