叶青双经先照处理２—１６ｈ后，对水稻白叶枯病的活性显著增强。接菌前１天和接菌当时施药，第１０天的抑病效果＞８０％，接菌后１天施药，第１５天的抑病效果达６０％左右，说明光产物不仅有很好的保护作用，叶片内吸后的治疗作用比母体显著增强。光产物叶面施用的残效期比母体延长５—７天；根部内吸作用良好，根施１０天后抑病效果达９０％左右。光产物溶液经１年黑暗贮存后仍具有稳定的活性。 Ye Qing Shuangjing according to the first photo treatment 2-16h, the activity of rice bacterial blight significantly increased. 1 day before inoculation and the time when the inoculation was applied, the anti-disease effect was> 80% on the 10th day. After 1 day after the inoculation, the anti-disease effect reached 60% on the 15th day, indicating that the photoproducts are not only very good The protective effect of leaf suction after the treatment was significantly enhanced than the mother. The photoperiod of foliar application was prolonged 5-7 days longer than that of the parent. The root absorption was good, and the effect of inhibiting disease was about 90% after 10 days of root application. The photoproduct solution remained stable after 1 year of dark storage.