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进入7月中旬以来,山东、河南、河北、江苏等地,汛期较往年同期提前半个月的时间,出现连续阴雨、高温天气,导致春花生生长过旺,农民在控旺同时,要预防白绢病大面积发生。据笔者近两年在当地了解,由于阴雨连绵导致花生白绢病大面积且呈大范围漫延的趋势。从时间上来看,目前白绢病的发生尚处于初期或没有发生阶段,因此建议农民应抓紧采取药物预防为主,以达到事半功倍的效果。症状特点:病株外观呈凋萎状,检视茎基部,可见患部表面及地际土壤表面出现两种病征:白色绢丝状菌丝体(菌索)和油菜籽粒状乳白色至茶褐色小菌核。
Since entering the middle of July, Shandong, Henan, Hebei, Jiangsu and other places have had continuous rainy and hot weather in the flood season more than half a month earlier than the same period in previous years. As a result, the growth of spring peanut is over-flourishing. A large area of silk disease occurs. According to the author in the past two years in the local understanding, due to overcast and rain led to a large area of peanut sclerotium and a wide range of trends. From a time point of view, at present, the incidence of sclerotium is still at an early stage or not. Therefore, it is suggested that farmers should pay close attention to drug prevention and achieve a multiplier effect. Symptoms and signs: wilt appearance of diseased plants, check the base of the stalk, visible on the surface of the affected area and the surface of the soil there are two symptoms: white silk mycelium (mycelium) and rapeseed granular milky brown to small brown sclerotia.