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- W3146099355 abstract "Cotton bollworm( Helicoverpa armigera Hubner) is the most important loss causing insect pest in the cotton area in China.It has 4～5 generations per year and has caused serious damage to the staple crops recently in Hebei Province.The cotton bollworm disaster fluctuates mainly with the varying local climate.An integrated meteorological method was established to fully express the climatic influence on cotton bollworm to forecast and analyze the cotton bollworm occurrence in Hebei Province.(1)Eight climatic phases in a year were generated according to the cotton bollworm life table.Then the corresponding multi phased integrated climatic factors were formulated depending on their influences on cotton bollworm.(2)Euclidean Distance model with weight correction to the integrated climatic factors was established to forecast and analyze the seriousness of the occurrence of each cotton bollworm generation.The factorial weights were determined by the correlation coefficients of the factors with cotton bollworm population.And also the multi regression model with these factors was achieved.(3)The biological auto regression model was built to predict the next generation′s population using the current population as an independent variable.Then by integrating the results from the meteorological model and the results from the biological model according to their weights which was decided from historical data,the comprehensive method to forecast the cotton bollworm disaster was achieved.The accuracy of the predication of the bollworm population trend by this comprehensive method reached 93% in 1998～1999" @default.
- W3146099355 created "2021-04-13" @default.
- W3146099355 creator A5069778514 @default.
- W3146099355 date "2001-01-01" @default.
- W3146099355 modified "2023-09-25" @default.
- W3146099355 title "An integrated meteorological method for forecasting the cotton bollworm(Helicoverpa armigera Hübner) population in Hebei Province" @default.
- W3146099355 hasPublicationYear "2001" @default.
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