《现代农业》于总第190、192、200期“园艺栏目”中先后刊出“山药开发前景及其配套技术”、“山药的选种与繁殖”、“山药的采收与贮藏”等文章后,接连不断地收到全国各地许多读者来信。现就读者共同关心的“山药黑斑病的发生与防治”介绍于下。一、发生规律山药黑斑病为短体线虫侵染所致,故又称山药短体线虫病。其为近年来发现的一种新的毁灭性病害,从播种至收获整个生长期均可危害。过去因栽培面积小,未能引起人们足够重视,随着种植面积的逐年扩大,其发生危害愈来愈重,一般重茬地发病 “Modern Agriculture” has published articles such as “Development Prospects of Yam and Their Supporting Techniques”, “Selection and Breeding of Yam”, “Collection and Storage of Yam” in the first 190,192,200 Horticultural Sections After a series of letters from all over the country were received one after another. Now readers are concerned about the “yam spot occurrence and prevention” introduced below. First, the occurrence of regular black spot disease yam infection caused by short-body, it is also known as yam short-body nematode disease. It is a new devastating disease discovered in recent years that can be hazardous from sowing to harvest throughout its growing season. In the past due to the cultivation of a small area, failed to arouse enough attention, with the growing area of ​​the growing year by year, its occurrence more and more serious harm, the general crop disease