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聚合草是我国近年推广种植的高产多年生饲料作物,各地反应烂根死苗较为普遍。在四川炎夏高温季节,许多地方一经收割,烂根死苗率一般为20—30％,个别地块甚至达100％。前些年我所试种朝鲜种聚合草,不同地块的烂根死苗率亦在4—47％之间。据有关资料报导和我们研究的结果表明,这一病害是根腐病菌引起的,用一般农药无显著效果。聚合草严重烂根死苗的现象,是当前推广种植发展这一高产饲料作物急待探讨解决的问题。
Polymerization grass is a high-yield perennial forage crop popularized in China in recent years. In the hot summer season in Sichuan, many places once harvested, the rate of rotten roots and dead shoots is generally 20-30%, and even individual parcels reach 100%. A few years ago, I tried to plant Korean species of aggregate grass, root rot in different parts of the dead seedlings rate is also between 4-47%. According to the data reported and our study results show that the disease is caused by the root rot bacteria, with no significant effect of general pesticides. Aggregate grasses serious rotten root dead phenomenon is the current promotion of planting and development of high-yield forage crop urgent discussion to solve the problem.