条件筛选
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Latest Key Points of High-Quality Apple Cultivation Techniques
1. Improve the variety structure. Introduce varieties such as Yanfu, Royal Gala, and Sasha for promotion, gradually replacing old, mixed, and inferior varieties. Changfu and Qiufu should also be replaced with superior Fuji lines. New apple orchards should all adopt new varieties and new rootstocks. 2. Rational close planting,