例句與造句

1. Arbotect is not effective on root graft infections from adjacent elm trees.
2. Such plowing will sever root grafts that may transmit the disease to neighboring trees.
3. A root graft is similar to grafting fruit varieties or rose cultivars to a rootstock.
4. It spreads from tree to tree by root grafts, killing trees in an ever-widening circle.
5. A problem with root grafts is that they allow transmission of certain pathogens, such as Dutch elm disease.
6. It's difficult to find root graft in a sentence. 用root graft造句挺難的
7. It can be spread in perennial crops by harvesting ( mechanical transmission ) and possibly by root grafts.
8. In the West, Christmas tree growers use genetic research, root grafts and other techniques to create the perfect tree.
9. Oak wilt usually moves from diseased trees to healthy trees through roots that have become interconnected ( root grafts ).
10. Tabonuco trees are especially large on ridges, where they are firmly rooted in the rocky substrate and connected by root grafts with each other.
11. This method of transmission is important for introducing the fungus into a new area it could not have reached by transmission via root grafts.
12. Frequency of root graft formation, and therefore root graft transmission, is affected by soil type and stand composition ( diversity of tree species ).
13. Frequency of root graft formation, and therefore root graft transmission, is affected by soil type and stand composition ( diversity of tree species ).
14. At least 150 species of trees form root grafts, including birches, many varieties of oaks, red maples, most pines, American elms, lindens and some firs.
15. Treating to natural barriers means restoring to native forest or savanna species by harvesting out to where oak wilt can no longer expand via root grafts.
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