The authors of the article, on the basis of studies conducted on the territory of the state forest fund of the KSU "Samsk State Institution for the Forests and Wildlife Protection" of the Department of Natural Resources and Environmental Management in Mangystau Region, prove that in the arid conditions of Western Kazakhstan, the terms of planting black saxaul affects growth and survival rate. The main indicator of the success of silvicultural work is the survival rate and growth, which more fully characterize the physiological state of plants in connection with transplantation. The survival rate of seedlings is closely related to the amount of soil moisture at the time of planting and in the first 10-15 days after it. The article presents the results of the optimal terms of the creation of black saxaul crops in spring. The most reliable way to create forest saxaul crops is spring planting with annual standard seedlings, which ensures a high percentage of survival rate and distribution of plants over the entire area compared to autumn sowing. Preliminarily, the first ten days of April should be considered the optimal planting time for the arid conditions of Western Kazakhstan. Delay in forest planting by one decade significantly reduces the survival rate of crops.
The uniqueness of the biological properties and the occurrence in nature of the Schrenk’s Spruce (Picea schrenkiana Fisch. & C.A. Mey.), its great forestry significance, and important eco-stabilizing functions of its stands in the Northern Tian Shan are of great interest to a wide range of researchers in many countries. However, many characteristics of this endemic species have been poorly studied so far, and information on the effectiveness of its introduction is extremely limited. We investigated the characteristics of growth and development of spruce seedlings in the conditions of the Nizhny Novgorod region. The seeds were harvested in natural plantations on the territory of the Almaty State Nature Reserve, which is located in the Central part of the Trans-Ili Alatau in South-Eastern Kazakhstan. They were sown in an open ground nursery under stimulating treatment with the following bioactive stimulants: siliplant, ferovit, ecofus, kornevin, heteroauxin, zircon, extrasol, epin, and albit. The soaking of all the seeds in water at the same exposure for 24 h served as control. The aftereffect of bioactive substances in the pre-sowing stimulating treatment of Shrenk’s spruce seeds was found to activate the growth processes of the aboveground part of its seedlings during the introduction into the Nizhny Novgorod region. It was found that the biennial part of seedlings axial shoot had unequal length in different experimental options. The highest values were achieved in the variants with the use of the following stimulants: ferovit (5.95±0.02 cm), heteroauxin (5.62±0.16 cm), ecofus (5.47±0.32 cm), and albit (5.49±0.015 cm). The generalized value was 5.08±0.07 cm. The growth characteristics of seedlings also respond to the stimulating effect. The best results in this case were shown by ferovit (2.25±0.023 cm) and heteroauxin (1.96±0.17 cm). The differences in the number of side shoots are less contrasting. However, we can also see the previously noted trends: ferovit (1.42±0.25 pcs); heteroauxin (1.34±0.19 pcs); and albit (1.31±0.19 pcs). We obtained the certificate of sufficient resource of natural conditions of the region for seed breeding of Schrenk’s spruce in the open ground and the significant potential of its introduction to the Nizhny Novgorod region.
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