A method for field planting of peach tree embryo seedlings in the same year

Abstract

The invention provides a method for field planting of peach tree embryo culture seedlings in the same year. The method includes: transplanting the peach tree embryo culture seedlings into a mixed matrix; controlling water content in the matrix to 29-40%; using high-nitrogen water-soluble fertilizer for irrigation after seedling recovering; when the peach tree embryo culture seedlings are dormant, performing foliage application of gibberellins of 100-250mg / L to break dormancy; when the peach tree embryo culture seedlings grow to 20-30cm in height, transplanting the same into a mixed matrix containing slow-release fertilizer; when the peach tree embryo culture seedlings grow to 70-100cm in height, planting the same into a field. By controlling the water content in the matrix after transplanting, applying the high-nitrogen water-soluble fertilizer after seedling recovering, applying the slow-release fertilizer for seedling strengthening after transplanting for the second time and combining foliage application of gibberellins of 100-250mg / L after dormancy to break dormancy, the peach tree embryo culture seedlings are enabled to be robust in growth and developed in root system and can be planted in the field in the same year of cultivation, and survival rate of the peach tree embryo culture seedlings when being planted in the field is increased.

Description

technical field The invention relates to the technical field of peach tree seedling cultivation, in particular to a method for cultivating peach tree embryo seedlings for field planting in the same year. Background technique Embryo rescue technology is the early in vitro cultivation of embryos that are difficult to sow and become seedlings due to nutritional and / or physiological factors, or aborted or degenerated embryos appear during development. For early-maturing varieties of stone fruit trees, the embryos are usually underdeveloped. Sowing can not emerge or the germination rate is very low. At present, peach breeders have done a lot of work on the cultivation of early-maturing peach embryos, and have bred many excellent early-maturing varieties, but the seedling rate of embryo cultivation is low, and the imperfect transplanting technology of embryo-cultivated seedlings has seriously restricted the development of early-maturing peaches. Breeding efficiency. Under norma...

AI Technical Summary

Problems solved by technology

At present, peach breeders have done a lot of work on the cultivation of early-maturing peach embryos, and have bred many excellent early-maturing varieties, but the seedling rate of embryo cultivation is low, and the imperfect transplanting technology of embryo-cultivated seedlings has seriously restricted the development of early-maturing peaches. Breeding efficiency

Under normal circumstances, peach seedlings rescued from embryos will enter secondary dormancy about 2 months after transplanting, the growth point will no longer grow, and the tree body will be short. Slow, resulting in thin seedlings when transplanted to the field, and low transplant survival rate

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