研究牛粪堆制的有机肥不同施用量对观赏向日葵生长发育的影响。
The effects of cow dung composts used as base fertilizers on ornamental sunflower growth were studied.
这个不育系的育性表现比较稳定，有可能用于无花粉观赏向日葵杂交种的生产。
Its sterility shows stable and is a potential recourse to produce pollen-free ornamental sunflower hybrid.
这个不育系的育性表现比较稳定，有可能用于无花粉观赏向日葵杂交种的生产。
Its sterility shows stable and is a potential recourse to produce pollen-free ornamental sunflower hybrid.
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