Research on the cultivation of siberian cedar pine for a long period

Abstract

The results of many years of research on the cultivation of Siberian cedar pine are given: storage, pre-sowing treatment of seeds with trace elements and growth stimulants, their irradiation with Rengen rays, additional lighting of seedlings, cuttings, creation of plantations with clones, half-siblings, offspring of different geographical origin. The obtained results were used in the development of GOST, OSTs, RTS, recommendations, creation of databases. The research was carried out at experimental sites in the Educational and Experimental Forestry of SibSU, the Yermakovsky Forestry of the Krasnoyarsk Territory, as well as other forestries in Siberia on the basis of generally accepted methods in forestry production. Optimal conditions for long-term storage of seeds, the use of stimulants, trace elements when growing planting material were revealed. Additional illumination of seedlings, the use of light filters of specific spectral composition are proposed. The agricultural technique of growing planting material in nurseries of Siberia, the influence of the size of planting material on the survival rate and growth of plants in forest crops are analyzed. The growth of Siberian cedar pine on the root of Scots pine and Siberian cedar pine was tested. The variability of ramets and semisiblings of plus trees certified by seed and trunk productivity was studied. The influence of buckthorn buckthorn on the growth and seed production of Siberian cedar pine of different geographical origin was established, the offspring of populations characterized by intensive growth and early reproductive development were selected.