Preliminary Studies On Selection Of Excellent Clones Of Black Poplus Species

Black poplar plantations in recent years the rapid development of our country has been more than the rest of the world black poplar plantation area combined. Our country from the south of the Yangtze River in Heilongjiang, north to the natural conditions of the majority of the region are suitable for growth and Yang, so the introduction of superior clones can be directly used for forestry production, have accelerated the production of our country Yangmu importance. Of different black poplar clones comparative test results show that: the new clones of Populus nigra cited at the end of March is usually cultivated in Henan germination, seedling growth of different clones of differences, large differences in growth, growth through multi-year comparison test, the selection L542 ,84-320 ,84-310 P.deltoides three new varieties, showing a higher performance of the early fast-growing. Analysis of materials by timber, compared with the control, the fiber aspect ratio, do the whole wood density were significantly higher than the control. Description of the three varieties of better materials, and suitable for the development of plywood, paper and other industrial timber.Multi-year trial also showed that the three new varieties of poplar leaf Department acicola, trunk canker, Anoplophora glabripennis, Yang poplar and other major social moth has strong resistance to pests and diseases. Acicola which, day and social moth Anoplophora glabripennis Shaalan resistance is superior to Yang, the trunk canker resistance is better than 4 6 Yang Zhonglin. At the same time, these three species in the cold hardiness, drought resistance and wind performance folding excellent ability that has a strong resistance. So think of these three fine varieties can be used as the next province to create a fast growing poplar forest and farmland species preferred forest.