近年来,南方许多粳稻品种引种栽植后,较籼稻表现根系发达,分蘖能力强;叶片浓绿,光能利用率高;茎与穗梗粗壮,抗倒能力强;穗大粒多,产量高。因此,得到广大农民(特别是种粮大户、粮食种植合作社、粮食科技示范户)认可,它对水稻产量普遍提高,保障我国粮食安全具有重要意义。但是,水稻“籼改粳”中的水稻稻曲病发病严重,能否采取正确的防治措施,是决定水稻“籼改粳”能否顺利推进的关键。水稻稻曲病是水稻常见的一种 In recent years, the introduction and planting of many japonica rice varieties in the south showed that the developed root system and tillering ability of indica rice was stronger than that of indica rice. The leaves were dark green with high light utilization rate. Stalk and stem were sturdy and strong in lodging resistance. Therefore, it is endorsed by the vast majority of peasants (especially big grain growers, cooperatives for grain cultivation, and demonstration households for food science and technology). It is of great significance to the general increase of rice output and the protection of China’s food security. However, the incidence of rice false smut in rice “indica changed japonica” is very serious. Whether it can take proper control measures is the key to decide whether the rice “indica change japonica” can be smoothly progressed. Rice false smut is a common type of rice