| Studies on the Relationship between Occurrence Degree of Cotton Bollworm and Rainfall |
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| 作者单位： | LIU Xue-yi1，WANG Hong-tao1，GAO Wei-li2，FAN Xiao-jiu3，LI Shu-ying1，WEI Jin-yan3，CUI Su-hua2，WANG Hua1，SHEN Yu-lu1，ZHANG Yong11. Meteorological Bureau of Luyi County，Henan Province，Luyi 477200; 2. Meteorological Bureau of Xihua County，Henan Province，Xihua 466630; 3. Huangfanqu Farmland，Henan Province，Fanqu 466632 |
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| 摘 要： | Objective] The aim of the study is to investigate the factors causing the outbreak of cotton bollworm and to provide effective measures for controlling cotton bollworm. Method] Based on the analysis of the data about insect and weather situation in Luyi County in 32 years,the meteorological prediction model was established for monitoring the quarterly or monthly occurrence trend of cotton bollworm. Result] The cotton bollworm occurred slightly in the years with rainfalls of 3 months over 500 nm and severely in the years with rainfalls of 3 months less than 400 nm. The results of correlation analysis show that annual occurrence degrees of cotton bollworm and occurrence degrees of 4th generation of cotton bollworm are extremely negatively correlated with rainfall during June-August; the occurrence degrees of 3rd and 4th generations of cotton bollworm are also extremely negatively correlated with rainfall in July. Conclusion] The occurrence of cotton bollworm in field is heavily influenced by rainfall in at its occurrence stage,moreover,the rainfall during June-August is the decisive factors influencing the occurrence of cotton bollworm.
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Studies on the Relationship between Occurrence Degree of Cotton Bollworm and Rainfall |
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| Authors: | LIU Xue-yi WANG Hong-tao GAO Wei-li FAN Xiao-jiu LI Shu-ying WEI Jin-yan CUI Su-hua WANG Hua SHEN Yu-lu ZHANG Yong Meteorological Bureau of Luyi County Henan Province Luyi Meteorological Bureau of Xihua County Henan Province Xihua Huangfanqu Farmland Henan Province Fanqu |
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| Institution: | LIU Xue-yi1,WANG Hong-tao1,GAO Wei-li2,FAN Xiao-jiu3,LI Shu-ying1,WEI Jin-yan3,CUI Su-hua2,WANG Hua1,SHEN Yu-lu1,ZHANG Yong11. Meteorological Bureau of Luyi County,Henan Province,Luyi 477200, 2. Meteorological Bureau of Xihua County,Henan Province,Xihua 466630, 3. Huangfanqu Farmland,Henan Province,Fanqu 466632 |
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| Abstract: | Objective] The aim of the study is to investigate the factors causing the outbreak of cotton bollworm and to provide effective measures for controlling cotton bollworm. Method] Based on the analysis of the data about insect and weather situation in Luyi County in 32 years,the meteorological prediction model was established for monitoring the quarterly or monthly occurrence trend of cotton bollworm. Result] The cotton bollworm occurred slightly in the years with rainfalls of 3 months over 500 nm and severely in the years with rainfalls of 3 months less than 400 nm. The results of correlation analysis show that annual occurrence degrees of cotton bollworm and occurrence degrees of 4th generation of cotton bollworm are extremely negatively correlated with rainfall during June-August; the occurrence degrees of 3rd and 4th generations of cotton bollworm are also extremely negatively correlated with rainfall in July. Conclusion] The occurrence of cotton bollworm in field is heavily influenced by rainfall in at its occurrence stage,moreover,the rainfall during June-August is the decisive factors influencing the occurrence of cotton bollworm. |
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| Keywords: | Cotton bollworm Occurrence degree Rainfall Relationship |
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