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一、耕作制度的演变与水稻害虫的演替三十年代初期,苏州地区以中秋稻为主,其后沿江沿湖滩田相继开垦,引种早稻,形成混栽局面.解放后至1956年,东部和东北部以种植中稻为主,西部、西南部中秋稻和晚稻并存.1956～1959年间,水稻改制,中稻和中秋稻先后淘汰.1962年后,全地区基本上形成了以晚稻为主的稻区.1968年起,大力发展双季稻和三熟制,到1976年双、三熟制达水稻总面积的86.11%.1977年后布局有所调整,至1980年双、三制下降为水稻总面积的69.4%;同时从1977年开始推广单季杂
First, the evolution of farming system and the succession of rice pests In the early 1930s, mainly in the mid-autumn rice in Suzhou, followed by reclamation along the beach along the lake, the introduction of early rice, the formation of mixed planting situation.After liberation to 1956, the eastern And the northeast to grow middle-mainly in the west, southwest mid-autumn and late rice co-exist between 1956 ~ 1959, rice restructuring, middle and late rice has eliminated.After 1962, the region basically formed a late rice-based rice District since 1968, vigorously develop double cropping rice and three cooked rice, double crop and triple crop reached total rice of 86.11% of the total area in 1976. After 1977, the layout has been adjusted, and in 1980, the double and triple cropland decreased to paddy 69.4% of the total area; at the same time from 1977 to promote single-season miscellaneous