Nevertheless, light is one of the factors influencing the reproduction of chestnut from seed, as is suggested by tJie fact that on the mixed type of chestnut and pine, where the density is less than on the two other types in which chestnut occurs, there... Bulletin (United States. Division of Forestry) - Էջ 181904Ամբողջությամբ դիտվող - Այս գրքի մասին
| Raphael Zon - 1904 - 54 էջ
...light is one of the factors influencing the reproduction of chestnut from seed, as is suggested by the fact that on the mixed type of chestnut and pine,...already developed, they are abundantly supplied with nourishment, and are able, therefore, to dispense with light to a considerable degree. This is only... | |
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