The distribution of root systems of two apricot species was observed by the Oskamp method.
用改良壕沟法对两个杏品种根系分布进行观察。
No-tillage cultivation improved the growth, development and distribution of rice root systems, and enhanced absorption activity of root systems as well.
免耕栽培有利于水稻根系发育和在土壤中的分布，同时免耕大幅度提高水稻根系的吸收活力。
No-tillage cultivation improved the growth, development and distribution of rice root systems, and enhanced absorption activity of root systems as well.
免耕栽培有利于水稻根系发育和在土壤中的分布，同时免耕大幅度提高水稻根系的吸收活力。
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