关键词: 菜豆种子, 菜豆种子, 硬实, 破除方法

Abstract: In order to provide scientific basis for monitoring and preventing and wiping out of the brown plant hopper (BPH) pests by analyzing the pattern of BPH’s occurrence and its climate background of catastrophic immigrations in Guangxi based on the pest data of 13 plant protect stations combining climatological data of temperature and rainfall and NCEP/NCAP through ArcGIS and GrADS. The results showed that: the BPH’s immigration beginning date in 2008 in Guangxi was in early and the immigration ending dates postponed, the pest boom period lasted as long as 222 days; The quantity of immigration BPH was large and took high percentage of plant hoppers, it also had a tendency of advance year by year; The high temperature from March to April was the primary reason of the early immigration of BPH in Guangxi; The appropriate intensity and multi-frequency of rainfall at nights from June to October was the leading factor which caused the multi BPH immigration peak time and great amount of pest in that year; The warm and moist southerly airstream at 850 hPa from April to August was an important driving force for the BPH’s immigration into Guangxi from the south central peninsula while the frequent northerly airstream at the height of 925 hPa provided the condition for the BPH’s moving back to Guangxi from provinces of Jiangxi and Hunan.