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四川西部海拔高在1000～3000m地区,空气相对湿度低,气候干燥,昼夜温差大。核桃嫁接很难成活。核桃生产仍没有从根本上改变实生栽培的现状。坚果品质良莠不齐,商品性能差,效益低,严重影响其发展进程。只有实现核桃良种化栽培,才能更好地面向国际竞争,而核桃良种繁育是实现其良种化栽培的关键。
In the western part of Sichuan, where the altitude is between 1000 and 3000 meters, the relative humidity of the air is low, the climate is dry, and the temperature difference between day and night is large. Walnut grafting is difficult to survive. Walnut production still does not fundamentally change the status of real cultivation. Good and bad quality nuts, poor product performance, low efficiency, seriously affecting the process of its development. Only the realization of walnut seedling cultivation, in order to better face the international competition, and walnut seed breeding is the key to achieving its variety cultivation.