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在不采取防治措施的情况下,抛秧田病虫总体发生重于插秧田。其中稻纹枯病发生从重到轻次序是常规抛秧→免耕抛秧→常规插秧;稻飞虱的发生从重到轻次序是常规抛秧→常规插秧→免耕抛秧;常规抛秧区的稻纵卷叶螟发生最重,常规插秧和免耕抛秧相当。并对这3种栽培方式病虫发生的特点及其原因进行了初步分析。
In the case of no prevention and control measures, the overall incidence of throwing pests and diseases in seedling transplanting is heavier than that of transplanting seedlings. Among them, the order of rice sheath blight occurring from heavy to light is conventional throwing → no-till throwing → conventional planting; the occurrence of planthoppers is from heavy to light to conventional throwing → conventional transplanting → no-till seedling throwing; Rice leaf roller occurs the heaviest, conventional transplanting and no-tillage throwing quite. The characteristics and causes of pests and diseases in these three cultivation methods were also analyzed.