西瓜、甜瓜细菌性腐烂病是为害西瓜、甜瓜的一种毁灭性病害,西瓜、甜瓜一旦发病,在成熟前烂瓜瓤,发病地块一般损失50%~90%,严重者绝产。1.症状病菌感染西瓜子叶,造成水渍状病斑,并脉逐渐发展为黑褐色坏死病斑。随后感染真叶,在真叶上形成不明显的褐色小斑,周围有黄色晕通常沿叶脉发展,对植株的直接影响不大,是感染果实的重要病菌来源。 Watermelon, melon Bacterial rot disease is a devastating disease damage watermelon, melon, watermelon, melon once the disease, rotten melon before maturity, the general incidence of land loss 50% to 90%, in severe cases of total abortion. 1. Symptoms of watermelon infected cotyledons, causing water-like lesions, and gradually developed into dark brown necrosis of the lesion. Subsequent infection of true leaves, the formation of obvious leaves in the real little brown spots around the yellow halo usually develops along the veins, the direct impact on plants is not, is an important source of bacteria infected with the fruit.