Moisture retention method for raising sweet potato and morning glory grafting survival rate

Abstract

The invention discloses a moisture retention method for raising sweet potato and morning glory grafting survival rate, and the method comprises the steps of selecting a sweet potato head seedling that is 4-5cm long and equivalent in coarseness and the morning glory and has 3-4 leaves; cutting 1-2 leaves off; cutting the basal part of the stem into a wedge; then inserting the notch of the morning glory; selecting a tender wicker of one year; stripping the cylindric willow leather after removing the leaves; cutting the willow leather into segments that are 2cm in length; cutting the segments vertically to have a rectangle; wrapping the rectangular willow leather onto the grafting port; and binding the up end and the down end of the willow leather with a piece of fine thread tightly. In the invention, the willow leather is used as the moisture retention material; the advantages of the willow leather like slow dehydration and long moisture retention are utilized; and the moisture transpiration at the grafting port is prevented, therefore the sweet potato seedling and the morning glory can heal rapidly and grow smoothly; the grafting survival rate can be over 98.0%; the moisture retention is raised by more than 20.0% compared to routine cotton ball moisture retention method; and the work efficiency is improved. Further, the method of the present invention has the advantages of simple operation, reliable utility and high success rate.

Description

technical field [0001] The invention belongs to the technical field of sweet potato grafting and hybrid breeding, and in particular relates to a moisturizing method for improving the survival rate of sweet potato and morning glory grafting. Background technique [0002] Sweet potato is a cross-pollination crop. To carry out cross-breeding of sweet potato, it is necessary to go through sexual growth and reproduction, that is, after the sweet potato blooms, cross-pollination is carried out, and the sweet potato ovary develops and matures to form seeds. The vegetative seedlings grown from seeds germinate and grow through cuttings, Through the steps of reproduction, tuber formation, and screening, better new varieties of sweet potato can be cultivated. Since sweet potato is a short-day crop, under the natural environmental conditions in northern my country, it generally only grows vegetatively and does not flower. Therefore, in order to carry out hybrid breeding, the following...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a moisturizing method for improving the survival rate of sweet potato and morning glory grafting, aiming to solve the problem that the current commonly used moisturizing method is to place wet cotton balls after grafting sweet potato seedlings and cover them with plastic film. Poor, the survival rate of grafted seedlings is only about 70%, which wastes artificial and material resources and affects the efficiency of hybrid breeding

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