从日前在杭州召开的全国水稻生产机械化与杂草防控研讨会上获悉,草害已成为与病害、虫害并列的对农业生产三大危害之一,杂草危害导致每年全球农业产值损失高达13.2%,每年粮食产量损失更相当于约10亿人一年的口粮。与会专家呼吁,警惕我国水稻生产中愈演愈烈的杂草高抗药性风险。农业部农技推广中心研究员梁帝允透露,根据2009~2013年全国调查结果,目前我国稻田杂草143种,其中禾本科23种,莎草科26种,年发 From a recent seminar on mechanization and prevention and control of weeds in rice held in Hangzhou, it was learned that grass weeds have become one of the three major hazards to agricultural production linked to diseases and insect pests. The damage caused by weeds has resulted in an annual loss of 13.2% of the global agricultural output value % Of the annual loss of food production more equivalent to about 1 billion people a year of rations. Participants called for vigilance against the growing risk of weeds in China's rice production. According to the results of the national survey from 2009 to 2013, there are 143 species of weeds in paddy fields in China, including 23 species of grasses and 26 species of sedge,