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研究了 1 0个核桃优选株系的植株生长特点、青果和核果的外形特征和核果的主要经济性状 ,提出了宣恩核桃资源利用对策
The characteristics of the plant growth, the shape characteristics of the fruit and the drupe and the main economic characters of the drupe were studied. The countermeasures for the utilization of the resources of the walnut