Songnen Plain is located in higher latitude area, in which the planting system is bringing in one harvest a year, and its main crops are wheat, com, soybean, and rice.
松嫩平原纬度较高，种植制度多为一年一熟制，主要作物为小麦、玉米、大豆和水稻。
In result, a set of the technique system to adjust bumper planting of hybrid rice was made.
综合两者的研究结果，制订了一套以“汕优63”为代表的杂稻丰产栽培调控技术体系。
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