切取一段紫背天�的茎插入湿润的沙土中一般在4 10天后即可生出新根这种繁殖方法叫a．扦插b．压条c．嫁接d．组织培养——青夏教育精英家教�—— Sketch Coloring Page

切取一段紫背天�的茎插入湿润的沙土中一般在4 10天后即可生出新根这种繁殖方法叫a．扦插b．压条c．嫁接d．组织培养——青夏教育精英家教�—— Template

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tomski切取一段紫背天�的茎插入湿润的沙土中一般在4 10天后即可生出新根这种繁殖方法叫a．扦插b．压条c．嫁接d．组织培养——青夏教育精英家教�—— coloring

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切取一段紫背天�的茎插入湿润的沙土中一般在4 10天后即可生出新根这种繁殖方法叫 A扦插 B压条 C嫁接 D组织培养 sketch template

实验题取一段带叶的茎把它放在水里剪断．然后将靠顶端的那一段迅速放进滴有几滴红墨水的水里并在阳光下照射3 4小时．你会�现叶脉红了整个 sketch template

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