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水稻恶苗病俗称“公稻子”，在我县每年都有发生，一般发生面积达３％～１０％左右。１发生原因我县地处小兴安岭南麓，呼兰河中上游，年积温在２２００～２６００℃，年平均气温为１．６℃，年降雨量为５８０mm左右，无霜期在１２０d左右。水稻每年均采用催芽播种，旱育苗，５
Rice stump disease commonly known as “male rice” occurs in our county every year, the general area of about 3% to 10%. 1 Reason I County is located in the southern foot of Xiaoxing’anling, the middle and upper reaches of the Hulan River, annual accumulated temperature of 2200 ~ 2600 ℃, the annual average temperature of 1.6 ℃, the annual rainfall of about 580mm, frost-free period of about 120d. Rice germination sowing every year, drought nursery, 5