１９９８年春豫东西瓜死苗严重１９９８年春豫东西瓜死苗严重，是历年未见。笔者对豫东中牟、杞县、兰考、开封、通许等西瓜主产区进行了田间调查。西瓜死苗主要是由猝倒病、炭疽病、根腐病、枯萎病、细菌性角斑病（大棚内）及沤根等病害为害所致，造成西瓜死苗二成以上，... In the spring of 1998, there was a serious melon death in the east and west of the country in 1998. In the spring of 1998, watermelon and dead seedlings were severely weakened in Henan Province, and were never seen in the past years. The author of the eastern Henan Zhongmou, Qixian, Lankao, Kaifeng, Tong and other watermelon main producing areas conducted a field survey. Watermelon dead seedlings are mainly caused by diseases such as damping-off, anthracnose, root rot, wilt, bacterial angular leaf disease (inside the greenhouse) and gall root, causing over 20% watermelon dead seedlings, ...