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我国常年水稻种植面积3000万hm2(2011年),病虫害是威胁稻谷生产安全的重要因素。我国水稻病虫害有记载的100多种(病害61种,害虫78种),常发性病虫约20多种,年发生面积约1亿hm2次,防治面积1.52亿hm2次(2011年)。其中年发生面积超过667万hm2的有纹枯病[Pellicularia sasakii(Shirai)ItoetOtani]、二化螟[Chilo suppressalis(Walker)]、稻飞虱[Nilaparva talugens Stal,Sogatellab furcifera(Horvath),Laode-lphaxstriatellus(Fallen)]、稻纵卷叶螟(Cnaphalo-crocismedinalis Guenee)。我国水稻病虫
Perennial rice planting area in our country 30 million hm2 (2011), pests and diseases are an important threat to the safety of rice production. There are over 100 kinds of diseases and insect pests recorded in our country (61 diseases and 78 pests) and about 20 kinds of pests and diseases. The annual occurrence area is about 100 million hm2 and the control area is 152 million hm2 (2011). Among them, Pellicularia sasakii (Shirai) Itoet Otani [Chilo suppressalis (Walker)], Nilaparva talugens Stal, Sogatellab furcifera (Horvath), Laode-lphax striatellus (Fallen)], Cnaphalo-crocismedinalis Guenee. China rice pests and diseases