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近几年水稻恶苗病在我地区又有所抬头,个别发病较重地块,秧苗期每平方米有病苗300—400株,本田达43.3%,一般本田病株率多在1%以上。防治恶苗病,关键在于种子消毒。但消毒用汞制剂如赛力散等,已属禁用范围。当前怎样进行种子消毒?已成为生产单位所关心的事。现将各地的经验介绍如下,供参考。一、硫酸铜消毒法:用500倍硫酸铜液消毒。硫酸铜1斤先用少量温水溶化,然后兑500斤水,将稻种浸在药液中,水温保持在16℃以上(如水温低将影响消毒
In recent years, rice Bakanae disease has been on the rise in my area, with relatively high incidence of individual plots. In the seedling stage, there are 300-400 diseased seedlings per square meter and Honda reaches 43.3%. Generally, the prevalence of diseased plants in Honda is more than 1% . Prevention and treatment of disasters, the key lies in seed disinfection. However, disinfection of mercury preparations such as Saracetina, etc., is already banned. How to disinfect seeds at present? Has become the concern of production units. Now the experience of the introduction are as follows, for reference. First, copper sulfate disinfection: 500 times with copper sulfate disinfection. 1 kg of copper sulfate with a small amount of warm water before melting, and then against 500 pounds of water, the rice species immersed in the liquid, the water temperature maintained at above 16 ℃ (such as low water temperature will affect the disinfection