Влияние высоты сеянцев на рост сосны в лесных культурах

© М.Д. Мерзленко1, д-р с-х наук, проф.

М.И. Захарова2, асп.

1Институт лесоведения Российской Академии наук, ул. Советская, 21, п/о Успенское, Московская обл., Россия, 143030; е-mail: md.merzlenko@mail.ru

2Московский государственный университет леса, ул. 1-я Институтская, 1, г. Мытищи-5, Московская обл., Россия, 141005; е-mail: zaharova@mgul.ac.ru

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UDC 630*232

ISSN 0536 – 1036. ИВУЗ. «Лесной журнал». 2015. № 1

The Influence of Seedlings Height on the Growth of Pine in Artificial Stands

M.D. Merslenko1, Doctor of Agriculture, Professor

M.Y. Zakharova2, Postgraduate Student

1Institute of Forest Science, Russian Academy of Sciences, Sovetskaya, 21, Uspenskoe, Moscow region, 143030, Russia; е-mail: md.merzlenko@mail.ru

2Moscow State Forest University, 1st Institutskaya, 1, Mytischi, 141005; Russia;

е-mail:zaharova@mgul.ac.ru

The researches were carried out on the territory of Pereslavl district, Yaroslavl region, to find out how the seedlings height of Scotch pine (Pinus Sylvestris) influence on their growth in artificial stands. The research aimed to identify an ideal height of 2-year old seedlings of Scotch pine to establish artificial stands in the conditions of fresh ordinary subor. More than 150 parts of pine artificial stands were examined. In autumn the terminal shoots of Pinus Sylvestris with different height of planting stock were measured for the further calculation of the current height increment by different years of artificial stands growth. The current increments of the plants were calculated for the 2-year old artificial stands (establishment phase), 4 and 6-year old ones (individual growth phase) as well as 8-year old plants (late individual growth phase and early crown of closing phase). In total, 2750 terminal shoots were measured in artificial stands. The measurements of terminal shoots increments were made for the plants with different heights of planting stock ranging from 4 to 18 cm. The smallest seedlings as well as the biggest ones have their own worst rates of current height increments. The 8 to 13 cm height of 2-year old seedlings should be considered to be optimal for the given region and the habitat type. The optimal height of 2-year old pine seedlings is a result of the positive interaction of plants in the habitat genotype. A balanced combination of fast growth and adaptive capacity of artificial stands occur at these species. This is a very important property as in artificial stands growing the quickness of plants growing allows to reduce an individual growth phase and in forestry practice to transfer young plantations to the forested lands. We have revealed the optimal height of 2-year old seedlings that covers an average size of planting stock growing in the survey plot. Besides, according to the normal distribution law more seedlings fall within this size category than within the marginal sizes of height. So, the most seedlings will be suitable for artificial stands establishment in seeding section in case high agricultural techniques are applied.

Keywords: seedlings, scotch pine, artificial stands, terminal shoot, the optimal height of planting stock.

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