Method for controlling and promoting cutting seedling breeding of Chinese white poplar

Abstract

The invention discloses a novel forestry seedling raising technology, in particular to a method for controlling and promoting cutting seedling raising of Chinese white poplar. The method mainly comprises the following steps of: heightening a ridge planting seedbed, gathering seed branches, cutting the selected cutting, soaking the selected cutting with 200 ppm naphthylacetic acid aqueous solution, immersing in water for cuttage, physically controlling and promoting management, spraying and applying a 40 ppm naphthylacetic acid aqueous solution, spraying a 300 ppm paclobutrazol aqueous solution, spraying a 20 ppm giberellin aqueous solution, enhancing nursery stock management, and obtaining nursery stock. The method solves the technical problem that Chinese white poplar is not easy to takeroot and survive through cutting seedling raising, and has simple operation, investment saving, labor saving and time saving; the survival rate of the nursery stock reaches up to more than 93 percentand is improved by 50 to 60 percent higher than that common nursery stock adopting raising seedlings by cutting, the nursery stock regularly and rapidly grows, the percentage of seedling-selling reaches more than 85 percent, and the economic benefit and the social benefit are remarkable.

Description

technical field [0001] The invention relates to a new technology for growing seedlings by cuttings - a method for promoting and controlling cutting seedlings of poplar tomentosa. Background technique [0002] Populus tomentosa is a unique native tree species in my country. It has a long history of cultivation and is widely distributed. Poplar tomentosa has a straight and round trunk, excellent material, straight texture, long and tough fibers, and is easy to process. It can be used in construction, civil, furniture, and papermaking. It has a wide range of uses in the national economy and is a good tree with great development prospects. species. For a long time, the technology of cutting seedlings that restricts the breeding of poplar tomentosa seedlings has not yet been broken, because the cuttings are difficult to take root, and after the cuttings germinate, the seedlings grow back to about 30cm and die, resulting in a low survival rate of cutting seedlings and loss of pe...

AI Technical Summary

Problems solved by technology

Burying seedlings means burying the whole root seedlings in the ditch and managing them to make the buds produce roots. This method is not easy to manage, wastes seedlings and land, and has a low emergence rate; grafting and covering seedlings with black poplar is used as rootstock. Populus tomentosa is used as a scion, grafted, and the callus produced by sand storage is planted to the seedling field and covered with plastic film. This method is difficult to operate, labor-intensive and time-consuming, and the cost of seedling cultivation is extremely high