Сводный каталог книг

[Text] = Yield of seed, choice of seed trees, and seedling establishment in experiments with natural regeneration : доклад, тезисы доклада / S. Hagner. - Stockholm : Skogshogskolan, 1965. - 43 с. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 27). - swe. - Библиогр.: с. 41. - 0.20 р.

УДК

06

Аннотация: This work reports on some results from an investigation of the permanent experiments with shelterwood stands carried on by the department of regeneration. The results concern: yield of seed, importance of seed tree choice for the intensity of seeding, establishment of seedlings, relationship between the amount of seed shed and the number of seelings established

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[Text] = SFI-kultivatorn : научное издание / G. Callin, I. Troeng. - Stockholm : Skoghogskolan, 1966. - 16 p. : рис. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 37). - eng. - Библиогр. в конце ст. - 0.52 р.

УДК

06

Аннотация: When the SFI-type cultivator came into operation, it showed that its method of action, which was quite different in principle from those previously used, enabled scarification to be carried out with a twin implement even when the heaviest tractors were not avaiable. A study shows that scarification by SFI-cultivators increased very quickly in Sweden.


Доп.точки доступа:
Troeng, I.
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[Text] : научное издание / G. Orlander. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1986. - 17 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 173). - eng. - Библиогр.: с. 16-17. - ISBN 91-576-2691-X : 1.00 р.

УДК

06

Аннотация: The water relations in planted seedlings of Pinus sylvestris were measured to find out whether poor water uptake was an important factor affecting the palnting result.Seedlings were planted in the field on six different occasions. The soil was prepared in four ways: (a) Scarified patch, (b) A mound of mineral soil on the scarified patch, (c) A mound of mineral soil on a section of upturned humus, (d) No scarification. Needle conductance, needle water potential and plant water conductance (Gp) were measured on the seedlings during the period after planting (1-4 years). It was found that the planted seedlings suffered from water stress. Gp only being 2-46% of that in established references. Water uptake was reduced for several years after planting. Planting in mounds placed on mineral soil or in scarified patches favoured a high water uptake of the seedlings. The low water uptake of the seedlings after planting may explain the poor reforestation results frequently observed.

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