论文部分内容阅读
聚合草是我国目前重点推广的优质高产饲料之一。据报导,该草在南方各省(区)夏季常发生萎蔫烂根死苗病,尤以气温,湿度较高的地区发病更为严重、普遍,往往造成大片死亡。据我院牧场饲料地调查,新种植聚合草的地块,其发病率严重者达87.16%,死亡率占发病数的67.4%,严重地影响着它的产量和推广,是一个值得引起重视的问题。为此,两年多来我们对该病的发生环境、症状、
Polymeric grass is one of the key high-quality and high-quality fodder in our country. It has been reported that the grass often withers wilt disease in summer in the southern provinces (regions), especially in regions with high temperature and humidity, and the incidence is even more serious and widespread, often causing large-scale deaths. According to our pasture feed site survey, the newly planted plots of polymerized grass, the incidence of severe cases reached 87.16%, the mortality rate accounted for 67.4% of the number of cases, seriously affecting its production and promotion, is a cause for concern problem. To this end, more than two years we have the disease environment, symptoms,