小麦全蚀病，病菌只侵染小麦根部和茎基部的第l－2节，受害后病株矮化，分率减少，返青迟缓，叶片自下向上变黄，最后枯死，招致减产。发病轻的一般减产10％一20％，严重的可达50％以上。小麦整个生育期虽然均可苦害，但以抽穗灌浆期症状最为明显，将近成熟时，病株点片早... Wheat eclipse disease, bacteria invade the wheat roots and stems of the first 1-2 sections diseased plants after dwarfing, fractional reduction, slow retreat, leaves from yellow to yellow, and finally dead, resulting in reduced production. The incidence of mild general cut 10% to 20%, severe up to 50% or more. Although the whole growth period of wheat can be bitter, but the most obvious symptom in the heading stage of filling, when the near mature, the diseased plants point early ...