Method for regulating flowers and spikes of Feizixiao litchis

Abstract

The invention relates to a method for regulating flowers and spikes of Feizixiao litchis, belonging to the field of application of litchi production technology. The best method for gaining high and stable yields is to reduce the number of flowers and delay the time of flowering as the Feizixiao litchi variety is easy to flower, the number of flowers is great, the flowering needs to consume a great deal of nutrition and influence the rate of bearing fruit, and the fruit bearing is influenced by weather; the method comprises the steps: when spikes of Feizixiao litchis grows by differentiation to be 10-15 cm long in January and February, a growth retardant uniconazol with concentricity of 50-100ppm is used for postponing the growth of the spikes and restraining the premature growth of the spikes of Feizixiao litchis; after the method is adopted to treat the spikes, the premature growth of the spikes can be restrained to lead the spikes to become short and strong and greatly reduce the number of flowers, thus omitting heavy and nervous work for flower thinning for the Feizixiao litchis; and the flowering time of the Feizixiao litchis is postponed at about spring equinox, thus achieving the purpose of one-time flowering and bearing fruit, greatly improving rate of bearing fruit, and being compact in spikes, uniform in size of fruits and consistent in mature period.

Description

technical field [0001] The invention relates to a flower spike regulation method, in particular to a flower spike regulation method of Feizixiao litchi, which belongs to the research field of litchi production and application technology. Background technique [0002] my country is the country of origin of lychee and the largest producer in the world. It is mainly distributed in Guangdong, Guangxi, Fujian, Hainan and Taiwan, and its area and output account for 81% and 70% of the world's total respectively. Litchi belongs to one of the pillar industries in the rural industrial structure of various provinces and regions in South China, and it is also one of the most competitive and exportable South Subtropical fruits in my country. Feizixiao litchi is an ancient and famous litchi variety in my country, and it is also the main variety in Hainan, Guangdong and other provinces. Feizixiao has excellent quality and flavor, oval fruit, large and small core, thick and crisp flesh, st...

AI Technical Summary

Problems solved by technology

[0003] 1. Artificial and mechanical flower thinning are currently the most widely used methods for regulating the flower spikes of Feizixiao in my country. The flower spikes of Feizixiao can be as long as 30-40 cm. After flower thinning, they generally remain about 10 cm long, but the regulation of flower thinning The method only reduces part of the nutrient consumption, and it is labor-intensive and time-consuming. The probability of encountering bad weather during the flowering period is high, which is not good for pollination and fertilization, and it is easy to cause flowers to be unreal;

[0004] 2. Paclobutrazol regulates the flower spikes. The growth retardant paclobutrazol is used to regulate the flower spikes of Feizixiao. Although it can delay the flowering time, shorten the flower spikes of Feizixiao litchi, reduce the amount of flowers, and increase the fruit setting rate, paclobutrazol is low in efficiency and high in residues. More, long-term use will cause greater damage to the tree