一、荸荠虫害主要是荸荠白禾螟。该虫以幼虫钻蛀叶状茎，为害部位在土下茎基部，施药难以达到这个部位。因此，防治该虫应在幼虫下降到基部之前进行。经研究，每公顷有750头蛾（扑叶子）出现后3～5天为防治该虫最佳时期。该虫1年发生4代，第一代在6月份为害秧田，以后约每月1代 First, the water chestnuts pests mainly chestnuts white chestnut. The worm larvae moth-eaten leaves, damaged parts of soil stem base, spraying difficult to reach this site. Therefore, control of the insect should larvae down to the base before. After research, there are 750 moths (flapping leaves) per hectare 3 to 5 days after the emergence of the best period for the prevention and control of the insects. The worm occurred 4 generations a year, the first generation in June damaged seedling, after about 1 generation per month