Abstract: The study of rearing house-fly with the liquid feed and inventing a new rearing equipment of style of many layers,circulatory and spray were carried out. The results showed that the mew method with many advantage including quickly seperating speed,saving time and high efficiency might be suitable for industrial production.

Key words: forest region of , Eastern China, precipitation change, missing data interpolation, complete daily time series, Mann-Kendall abrupt change test, extreme recipitation.