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riyÑ[fepcnN- Ã 木本作物种质源繁殖更新 技术规程3)繁殖苗木定植的苗龄 根据树种、繁殖更新地点的气候条件、育苗方式和种植习惯 等,确定繁殖更新苗木的定植年龄,一般分为1年生、2年生或坐地砧苗。
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