关键词: 水分限制, 作物生长模拟模型, 区域尺度, 遥感信息

Abstract: By the method of artificial breeding in laboratory, this paper studied the effects of temperature on the development of invasive alien species Bactrocera dorsalis in Wuxi of Jiangsu, China. The results indicated that the development rate of B. dorsalis at its each development stage increased from 17 ℃ to 33 ℃. By using linear regression model and direct optimal method, the development threshold temperature (DTT) was determined, which was 99 ℃ for the developmental period from egg to adult, and was 105 ℃, 96 ℃, and 103 ℃ for the egg, larva, and pupa stages, respectively. The effective accumulation temperature (EAT) was 3810 day-degree for the developmental period from egg to adult, and was 241, 1786, and 1767 day-degree for egg, larva, and pupa stages, respectively. Temperature also affected the survival rate of B. dorsalis at its each developmental stage. The survival rate for egg stage was the highest at 25 ℃, and that for pupa stage was the lowest at 17 ℃. In addition, temperature had definite effects on the sex ratio of B. dorsalis. At 25 ℃, the proportion of the females was the highest.

Key words: Water stress, Crop growth simulation model, Regional scale, Remote sensing information