稻瘟病是严重危害水稻生产的主要病害之一,防治不力常会引起大量减产,有时会因穗颈瘟的发生而导致绝产失收。今年5月底6月初时,各地气温高,雨水多,极有利于稻瘟病-叶瘟的发病和蔓延。我国四川等省稻瘟病偏重发生,局部地区呈大 Rice blast is one of the major diseases that seriously endanger the production of rice. Unmanageable control often causes a lot of yield reduction, sometimes resulting in the loss of yield due to the occurrence of panicle blast. By the end of May this year, at the beginning of June and the beginning of June this year, the temperatures in all parts of the country are high and there is a lot of rain and rain, which is extremely beneficial to the occurrence and spread of the rice blast - leaf blast. Sichuan and other provinces in China are heavily prevalent in rice blast areas, with large areas in some areas