A method for grafting and replanting mature cocoa trees

Abstract

The invention relates to the field of agricultural technology and particularly relates to a grafting method of mature theobroma cacao. The method comprises the following steps: cutting a vertical long notch just reaching the xylem in depth in the stock trunk, cutting off the middle stock pieces, peeling off the phloem of the stock pieces at the two ends of the notch, and connecting one ends of the stock pieces at the two ends of the notch with the stock; longitudinally cutting off the phloem from one side of the pre-grafted scion without axillary bud, and exposing the longitudinal cutting surface to obtain a scion; embedding the scion into the notch while enabling the longitudinal cutting surface to match the cambium of the stock; covering the two ends of the scion with the stock pieces at the two ends of the notch; fixing the stock pieces and the scion and wrapping with a plastic film; after the scion survives, removing the plastic film; after the scion and the stock xylem heal, removing the materials for fixing; and when the new branch of the scion grows to 80-100cm long, sawing off the mature stock at a position 40-60cm above the grafting position. In the invention, the exposure surface of the scion wound is reduced, the scion-stock combination is tight, and the grafting survival rate is remarkably increased.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for grafting and replanting mature cocoa trees. Background technique [0002] Cocoa (tree) is a small perennial tree of the Sycamore family. It is one of the three major beverage crops in the world. The seeds (cocoa beans) are mellow and fragrant, and are the main raw materials for making chocolate and beverages. At present, cocoa is grown in more than 60 countries and regions in the world's hot spots, and more than 40 million people are directly employed. According to the statistics of the International Cocoa Organization (ICCO), the world's cocoa harvest area in the 2014 / 2015 harvest season is about 150 million mu, with a total output of 400 million mu. More than ten thousand tons. The cocoa beans needed in my country basically depend on imports. In 2013, my country imported 114,000 tons of cocoa beans and cocoa products, and the annual growth rate continued to ...

AI Technical Summary

Problems solved by technology

Replacing seed plants with improved clones is an effective way to improve cocoa varieties. However, it is time-consuming and labor-intensive to dig out mature cocoa trees and replant cocoa clones after leveling the land.

The Tropical Agricultural Research Center of Costa Rica abroad has carried out relevant research on cocoa grafting technology. The book "Cocoa Grafting and Seedling Breeding Methods" written by Eduardo Somarriba Chavez et al. mentions the method of grafting mature cocoa trees, but this method only has one end of the scion and The rootstock is in contact, and the scion branches are easy to loose after being untied, resulting in a low survival rate

There is no research on the grafting method of mature cocoa trees in China

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