occurrence period 第1页

Comparison of occurrence periods of wheat aphids based on artificial neural network and wavelet neural network prediction systems Population dynamics and occurrence period of brown planthoppers based on the historic data analysis of light trap catches The synchronization of ear emerging stages of winter wheat with occurrent periods of the orange wheat blossom midge, Sitodiplosismosellana (Gehin) (Diptera: Cecidomyiidae) adults and its damaged level