Method for cultivating hickory nut stock grafting seedling

Abstract

The present invention discloses a cultivating method with Carya cathayensis stock as scion, the procedure of which is to establish a seedling nursery of Carya cathayensis stock; the Platycarya strobilacea, Carya cathayensis, American Carya cathayensis or Hu nan Carya cathayensis are adopted as the stock, and the growing branch of the bearing tree of Carya cathayensis is adopted as the breeding mother tree for scion and cutting; the bed seedling of Carya cathayensis or the Carya cathayensis with the diameter at ground level is equal to or larger than one point seven centimeter and transplantedat the beginning of November of the previous year before scion and the hardy Carya cathayensis with the growth of one to two years are chosen as the stock, and the spacing in the rows and spacing between rows is not less than twelve multiplied twenty five centimeters; in the period from 10th November in the previous year to 31st January then, the hardy breeding branch with full bud, short intersegment and growth of one or two years is collected from the scion mother tree in the cutting orchard as the scion, and is arranged after collection in the shadow for twelve hours to thirty six hours, and is sealed and packed in a plastic film, and is stored into a refrigerated storage at 4 DEG C; when thirty percent of stock seedling starts to sprout in the cutting orchard or in the transplanted ground, the scion is completed within two or three weeks. The technical proposal can dwarf the tree of the Carya cathayensis, shorten the childhood period and fruit ahead of time.

Description

technical field [0001] The invention belongs to the field of plant grafting methods, and in particular relates to a method for cultivating hickory tree grafted seedlings. Background technique [0002] Hickory nut (Carya cathayensis) belongs to Juglandaceae, Carya genus, and its main production area is in the Tianmu Mountain area at the junction of Zhejiang and Anhui. Because of its high nutritional and economic value, the planting area has greatly increased in recent years. But existing hickory tree forest all is to adopt wild or sowing seedling on the spot or transplanting and tending to form, and seedling afforestation generally needs more than 8 years just to begin result (wild hickory nut 12 years beginning result), to entering full fruit period and need 20 years later; at the same time, the hickory tree trunk is towering, up to 21 meters high, and the yield is low, and it is very inconvenient to harvest; although there are options for the fine variety types and individu...

AI Technical Summary

Problems solved by technology

But, utilize general hickory nut adult tree branch to be scion, carry out this stock grafting test survival rate and all stay below 40%, and, although can bear fruit in advance, there is the problem that new tree growth vigor is slow and easily forms " old man tree ", and mountain Adult walnut trees mainly have fruiting branches and very few vegetative growth branches. If they are taken away as scions, there will be problems such as weak growth of old trees and a sharp drop in yield; The rate can reach 90% to 93%, but it lacks practical value because it does not reach the purpose of early fruiting, dwarfing the tree body and breeding good seeds; The survival rate of walnut adult tree growth branch is scion grafting test is 84% ​​~ 88%, but due to the incompatibility between tree species, after 5-10 years, the scion and rootstock will naturally crack and die, and the preservation rate is only within 10%

[0004] Therefore, before the method of the present invention, the asexual reproduction technology of hickory nut still rests on test and trial stage, does not form a kind of mature method that can promote in a large number and repeated verification, therefore, hickory nut tree body is tall, and childhood period is long and The lack of growing branches of adult hickory trees suitable for scion is still the main problem that seriously restricts the development of hickory nut industry