稻纵卷叶螟和穗颈瘟是水稻的主要虫害和病害,它们单独发生都能对水稻产量造成严重损失。对此,人们已经作了不少报导。但是,它们的消长都与高湿和高氮素营养水平有着密切的关系,因此,田间往往同时 Rice leaf roller and panicle blast are the major pests and diseases of rice, and their occurrence alone can cause serious loss of rice yield. In this regard, people have made a lot of reports. However, their growth and decline are closely related to the high-moisture and high-nitrogen nutrient levels. Therefore,