水稻小粒菌核病(小球小黑),群众称“镰刀瘟”或“稻桶瘟”,全省各地都有发生,但以往因发生轻,损失少,未引起注意。自1968年以后,在不少地区为害逐年加重,尤其是晚稻,发病后成片枯死倒伏,严重地影响了晚稻的产量。目前该病已成为萧山、余杭、奉化、余姚、镇海、诸暨、嘉兴、吴兴、温岭、瑞安等县晚稻的主要病害之一,也是我省水稻生产上必须研究解决的新问题。我们遵照伟大领袖毛主席关于“人的正确思想,只能从社会实践中来,只能从社会 Rice small sclerotinia (small ball black), the masses called “Sickle Plague” or “rice blast”, all over the province have occurred, but in the past because of light, less loss, did not pay attention. Since 1968, the damage in many areas has been increasing year by year, especially in late rice. After the onset of the disease, the crops become lonely and fall, seriously affecting the yield of late rice. At present, the disease has become one of the major diseases of late rice in Xiaoshan, Yuhang, Fenghua, Yuyao, Zhenhai, Zhuji, Jiaxing, Wuxing, Wenling and Ruian counties and also a new problem that must be studied and solved in rice production in our province. We follow the example of Chairman Mao, the great leader, that "the correct thinking of man can come only from social practice and from the perspective of society