The occurrence rules of rice planthopper in rice field with cultural crab was ascertained through systemic investigation and field census. 通過(guò)系統調查和大田普查相結合的方法，研究明確了養蟹稻田稻飛虱的發(fā)生規律。
Based on the habit and the occurrence fluctuations of rice planthopper, some aspects should be analyzed in rice planthopper forecast.The first is the induction of light trapping. 根據稻飛虱的生活習性和發(fā)生規律，在做預報時(shí)，對下列幾個(gè)問(wèn)題應進(jìn)行具體分析。
