METHOD OF SELECTING PLUS TREES OF PETIOLATE OAK

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to the forest u0445u043eu0437u00a0u0439u0441u0442u0432u0443, in particular to the evaluation of seed oak natural u043bu0435u0441u043eu043du0430u0441u0430u0436u0434u0435u043du0438u00a0u0445 prone to dried out. the purpose is to improve the effectiveness of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 selection for longevity and resistance to the dried out selected trees. within stand 60 - 70 years old, selected by the external features, form a square.in the pilot area u0438u0437u043cu0435u0440u00a0u044eu0442 parameters of trees and further u0438u0437u043cu0435u0440u00a0u044eu0442 firm crust and take u0434u0435u0440u0435u0432u044cu00a0 whose rate of hardness bark is 2 to 5 kg / cm2.