河源市地处广东省东北部，是一个典型的“八山一水一分田”的山区．地形复杂，气候变化明显，春暖较迟,秋寒较早，低温寡照，土质浅薄，农业基础差，传统耕作比较粗放，历史上曾是广东的一个粮食低产区．在建市之前的1987年，我市粮食单产只有244kg．1988年建市之后，粮食生产 Heyuan City is located in the northeast of Guangdong Province, is a typical “eight mountains and one water field” mountain. Complicated terrain, obvious climate change, late spring, early autumn cold, low temperature, shallow soil, poor agricultural base, the traditional farming is more extensive, history has been a grain low yield area in Guangdong. Before the founding of the city in 1987, the city’s grain yield only 244kg. After the establishment of the city in 1988, grain production