The occurrence rules of rice planthopper in rice field with cultural crab was ascertained through systemic investigation and field census. 通过系统调查和大田普查相结合的方法，研究明确了养蟹稻田稻飞虱的发生规律。
At present, all data collected through the census are under computer processing program, and the advance tabulation of major figures has been finished. 目前，普查全部资料正在用计算机进行数据处理，主要数据的快速汇总工作已经结束。
