我国幅员辽阔,地势复杂,气候多样,农业历史悠久,耕作制度繁多,故农作物品种资源异常丰富,多样性极大。苏联的Н·(?)·瓦维洛夫(Н·И·Ваь(?)лоь)根据其作物起源理论,认为中国是农业和栽培植物起源最早和最大的中心之一。他估计起源于中国的栽培作物约有200种,占全世界的六分 China has a vast territory, complex terrain, diverse climates, a long history of agriculture, and a great variety of farming systems. Therefore, the variety of crop varieties is extremely rich and diverse. According to the Theory of Crop Origin, Soviet Union’s Vavilov views China as one of the earliest and largest centers of origin of agricultural and cultivated plants. He estimates that there are about 200 cultivated crops originating in China, accounting for six points in the world