The occurring stage of rice planthopper in the paddy with or without cultural crab was similar 养蟹田和非养蟹田稻飞虱的发生期基本一致。
2.
The relationship of the distribution of rice planthopper and the distance of crab breeding line in the paddies with cultural crab was markedly positive 养蟹田稻飞虱的分布与距养殖沟的距离呈显著的正相关。