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砧木种子的沙藏答湖南省邵东县读者申椤北方落叶果树的种子，在长期系统发育过程中为适应不良环境条件而形成自然休眠特性，即需要经过低温后熟阶段才能发芽。因此果树砧木种子必须沙藏处理，完成种子后熟阶段。沙藏方法是：将１份种子和３～５份干净的湿河沙混拌均匀，装...
Rootstock seed sand answer A reader in Shaodong County, Hunan Province Shen 椤 North deciduous fruit trees in the long-term phylogenetic development process to adapt to poor environmental conditions and the formation of natural dormancy characteristics, that is, need to go through low temperature ripening stage to germinate. Therefore, fruit tree rootstock seed must be sand storage treatment, the completion of seed ripening stage. Sand storage method is: 1 part of the seeds and 3 to 5 parts of clean wet sand mixed evenly, installed ...