Abstract:

The amount of vegetables supplied to the market is uneven in Guangdong province.Usually the slack season appears after meteorological disasters. The daily means of vegetablesupply in March, April, August and September are obviously less than that of the annum.Those monthes are the main slacks in spring and autumn. The chilly and rainy weather damages vegetables in spring, while tropical cyclones and storm rainfalls do that in autumn.It is found that the intensity of chilly and rainy weather and the rainfall in March aredominant meteorological factors, and the low temperature condition in January, Februaryand sunshine duration in March are important meteorological factors for the slack of vegetable supply in spring. Meanwhile sunshine duration in August and torrential rains caused by tropical cyclones from July to September as well as the rainfall in July aredominant meteorological factors, and sunshine duration in July, September and the rainyday number in august are important meteorological factors for the slack in autumn.In theview of agrometeorology, a model about the relationship between the meteorolgical factorsand the amount of vegetable supply is obtained by calculation. The influence ofmeteorological disasters, such as chilly and rainy weather and torrential rains etc., on theproduction of vegetables are analysed, and the measures for decreasing the loss of meteological disasters are recommended.

Key words: Vegetable, balnce of supply, Guangzhou