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宜章县沙坪乡利用稻田田埂栽培梨树已有百余年历史,为探讨该立体农业模式形成和发展的原因、效益、推广价值及栽培管理经验,1988-1989年我们在梨稻间作的集中区上珠和双坝上村进行了调查研究。自然条件与经济效益宜章县位于南岭山脉中段,北纬25°23′,属中亚热带向南亚热带过渡的大陆性湿润季风气候区。年平均气温18.3℃,7月平均气温28.1℃,极端高温39.7℃,1月平均温7.1℃,极端低温-5.2℃,无霜期292天,≥10℃的年积温5729℃,年日照时数1603小时,年降雨量1393毫米,
Shaping Township, Yizhang County has been using pear cultivars for more than one hundred years to study the reasons for the formation and development of the three-dimensional agricultural model, its benefits, promotion value and its cultivation and management experience. From 1988 to 1989, District Shangzhu and Shuangba Village conducted a survey. Natural Conditions and Economic Benefits Yizhang County is located in the middle of the Nanling Range at latitudes 25 ° 23 ’north, belonging to the continental wet monsoon climate zone with a transition from the subtropical zone to the south subtropical zone. Average annual temperature of 18.3 ℃, July average temperature of 28.1 ℃, extreme high temperature 39.7 ℃, January average temperature 7.1 ℃, extreme low temperature -5.2 ℃, frost-free period 292 days, ≥ 10 ℃ annual temperature 5729 ℃, annual sunshine hours 1603 hours , Annual rainfall of 1393 mm,