目前,由于目前水稻采用直播及高产品种(高秆、大叶),加之长江流域夏季高温、高湿,此外,水稻分蘖盛期以后,水稻叶片密集、田间郁闭、通风不良造成纹枯病发生加重。同时,在水稻破口期雨水、温度等气候影响,稻曲病、稻瘟病、稻粒黑粉在水稻生长后期(穗期)发生可能性大,给农户造成减产损失的风险增加。针对目前水稻种植中存在的实际问题,日本曹达株式会社与江苏龙灯化学有限公司(加拿大龙灯集团全资子公 At present, due to the current direct and high-yielding varieties of rice (tall stalks and large leaves), coupled with the summer high temperature and humidity in the Yangtze River basin, in addition, rice tillering period, dense rice leaves, field canopy, poor ventilation caused sheath blight Increase. In the meantime, due to the influence of climatic conditions such as rainfall and temperature at the breach of paddy field, the incidence of false smut, rice blast and rice grain black powder is more likely to occur in the later stage of rice growth (heading stage), which increases the risk of loss to farmers. For the current practical problems in rice cultivation, Japan’s Soda Co., Ltd. and Jiangsu Longsheng Chemical Co., Ltd. (Canada Longsheng Group, a wholly owned subsidiary