[Objective] The aim was to analyze and explore division of agro-climatic zones of Beibei District in Chongqing municipality. [Method] According to major triple-cropping crops in Beibei District, such as wheat （spring...[Objective] The aim was to analyze and explore division of agro-climatic zones of Beibei District in Chongqing municipality. [Method] According to major triple-cropping crops in Beibei District, such as wheat （spring and winter）, rice （midmaturation early season rice, later-maturation early rice, later-maturation late rice and middle-season rice）, heat demanded by rapeseed, different cultivation methods and cultivation regions with different crop varieties, the accumulated temperatures in four cultivation regions featured by special cultivation methods and variety-matching are concluded. Based on average and accumulated temperatures in different locations in 30 y and other factors, such as terrain, elevation, rainfall and soil property, Beibei District can be classified into four agro-climatic zones. [Result] Four cultivation regions are as follows： the 1st cultivation region where accumulated temperature in T y is ≥6 530 ℃, the 2nd cultivation region where 6 530 ℃ accumulated temperature in T y≥6 350 ℃, the 3rd cultivation region where 6 530 ℃ accumulated temperature in T y≥5 990 ℃, and the 4th cultivation region where accumulated temperature in T y is ≤5 990 ℃. Beibei District can be classified into four agro-climatic zones, involving lower hill temperate zone, higher hill temperate zone, single-slope lower hills and karst temperate zone, and lower ridge cool zone. [Conclusion] Based on characters of four agro-climatic zones and accumulated temperatures required in four cultivation regions, agro-climatic zones can be classified in Beibei District, providing references for rational arrangement of crops and is of significance for stabilization of agricultural production, improvement of crops and increase of farmers’ income.展开更多
基金Supported by Key Technology Research and Development Program of Beibei District in Chongqing municipality (2012-11)~~
文摘[Objective] The aim was to analyze and explore division of agro-climatic zones of Beibei District in Chongqing municipality. [Method] According to major triple-cropping crops in Beibei District, such as wheat （spring and winter）, rice （midmaturation early season rice, later-maturation early rice, later-maturation late rice and middle-season rice）, heat demanded by rapeseed, different cultivation methods and cultivation regions with different crop varieties, the accumulated temperatures in four cultivation regions featured by special cultivation methods and variety-matching are concluded. Based on average and accumulated temperatures in different locations in 30 y and other factors, such as terrain, elevation, rainfall and soil property, Beibei District can be classified into four agro-climatic zones. [Result] Four cultivation regions are as follows： the 1st cultivation region where accumulated temperature in T y is ≥6 530 ℃, the 2nd cultivation region where 6 530 ℃ accumulated temperature in T y≥6 350 ℃, the 3rd cultivation region where 6 530 ℃ accumulated temperature in T y≥5 990 ℃, and the 4th cultivation region where accumulated temperature in T y is ≤5 990 ℃. Beibei District can be classified into four agro-climatic zones, involving lower hill temperate zone, higher hill temperate zone, single-slope lower hills and karst temperate zone, and lower ridge cool zone. [Conclusion] Based on characters of four agro-climatic zones and accumulated temperatures required in four cultivation regions, agro-climatic zones can be classified in Beibei District, providing references for rational arrangement of crops and is of significance for stabilization of agricultural production, improvement of crops and increase of farmers’ income.
