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是选用良种必须进行区域化种植。农作物品种是在一定生态条件下,经过长期自然选择和人工定向培育的结果。其特征特性表现是品种本身固有的遗传性与一定环境条件综合作用的结果,其生长发育离不开周围环境条件,只有外界生态条件(光照、温度、雨量、积温、无霜期、地势、土质、栽培条件等)与品种本身特性要求相一致,才能发挥其优良种性。这就是品种所具有的十分严格的区域性,这种区
It is necessary to carry out regional planting for selecting elite species. Crop varieties are the result of long-term natural selection and artificial cultivation under certain ecological conditions. Its characteristic traits are the result of its own hereditary nature and certain environmental conditions. Its growth and development are inseparable from the surrounding environmental conditions. Only the external ecological conditions (light, temperature, rainfall, accumulated temperature, frost-free period, topography, soil quality, cultivation Conditions, etc.) and the characteristics of the species itself is consistent with the requirements in order to play its good nature. This is the very strict regional nature of the species