穗颈稻瘟防治方法昌宁县农技推广所６７８１００罗树强穗颈稻瘟是造成水稻产量损失的主要病害。为了经济有效地搞好防治，应根据水稻生长情况，如：①叶瘟严重，并且叶枕瘟或节瘟发病率达１％以上的；②栽培易感品种，而亩产量估计超过５００千克的；③苗色正常，但灌用污... Panicle neck blast prevention and control methods Changning County Agricultural Extension 678100 Luo Shusiang panicle is the main cause of rice yield loss. In order to do a good job in economic and effective prevention and treatment, we should base on the growth of rice, such as: ① severe leaf blast, and the incidence of leaf pill or blast is over 1%; ② susceptible varieties are cultivated and the estimated yield per mu is more than 500 kg ; ③ seedling color is normal, but filling with sewage ...