Corylus heterophylla Fisch.*corylus avellanaL. seedling cultivation method

Abstract

The invention provides a corylus heterophylla Fisch.*corylus avellanaL. seedling cultivation method. The method comprises the steps that female parent tree field planting, leaf fertilizer applying and layering seedling cultivating are carried out, according to leaf fertilizer applying, when the growth height of green branches of root shoots reaches 25 cm, leaf fertilizer is irrigated in a dripped mode, the adopted amount is 5 L / mu, and spraying is carried out once every two weeks. According to the seedling cultivation method, the layering rooting rate is 99.3%, the survival rate is 99.8%, and time for seedling cultivation is shortened by 10 days; cultivated hazelnut seedlings are first-class seedlings, the seedling height is 85 cm, the ground diameter is 0.85 cm, the number of lignified side roots is 10, and the length is 25 cm; when the cultivated hazelnut seedlings grow into two-year-old trees, the freeze-resistant ability is high, and the trees can resist low temperature of 37 DEG C below zero during the dormancy period; after the cultivated corylus heterophylla Fisch.*corylus avellanaL. seedlings are planted, the fruit yield is large, the average single fruit weight reaches 2.8 g, shells are thin, the kernel percent is 45%, the average single-plant yield of the trees of 5-6 years old is 2.5 kg, and fruits are borne 10 days earlier.

Description

technical field [0001] The invention relates to a method for raising seedlings of Pingou hybrid hazel, which belongs to the technical field of seedling raising. Background technique [0002] Pingou hybrid hazel is an excellent variety bred by the distant hybridization between Chinese flat hazel and European hazelnut. It can bear fruit in the second year after planting. It has the characteristics of large fruit, good flavor, drought tolerance, and wide growth range. , as the main cultivated species of hazel in China, it is being planted on a large scale at a relatively fast speed. The breeding and seedling methods of hazel include grafting, cutting, layering, and tissue culture. The seedling breeding methods currently used in production and promotion are mainly layering breeding , that is to use the characteristics of the strong tillering ability of hybrid hazelnuts to treat the semi-lignified root seedlings of the year to create a moisturizing, heat-preserving and light-free...

AI Technical Summary

Problems solved by technology

[0004] (1) The rooting rate of layering is low; the survival rate is low, and the time for seedling cultivation is long;

[0005] (2) After the cultivated hazelnut seedlings are planted, their overwintering ability needs to be further improved. Generally, they can withstand the low temperature of -30°C, and the one-year-old branches will suffer from freezing damage;