一、病害及防治1.立枯病。此病是由真菌引起的草果幼苗病害,在3~4月间低温阴雨天发病严重。发病初期,在幼苗茎基部出现褐色病斑,病情加重后病部收缩,最后枯萎,严重时幼苗成片枯死。防治方法:在幼苗出土后,喷洒1:1:150波尔多液,每7天喷1次,连续喷2~3次;加强排水,降低土壤湿度;增施磷、钾肥,以提高幼苗抗病能力。发病时将 First, the disease and prevention 1. Blight. The disease is caused by the fungus seedlings of strawberry seedlings diseases, in the 3 to 4 months of severe cold and rainy days. Early onset, seedlings brown spots appear at the base of the base, the disease aggravates the contraction of the disease, the final wilt, severe seedling into pieces died. Prevention and treatment methods: After the seedlings were excavated, 1: 1: 150 Bordeaux mixture was sprayed and sprayed once every 7 days for 2 to 3 times in a row. Drainage was carried out to reduce soil moisture; phosphorus and potash fertilizer were added to improve seedling disease resistance . When the disease will be