Compound for improving the fertilization capacity during flowing phase of litchi and application thereof

Abstract

The invention belongs to the technical field of plant cultivation. The invention particularly relates to a compound for improving the fertilization capacity during flowing phase of litchi and application thereof. A reagent which can promote pollination and fertilization of litchi and is safe and environment-friendly is explored in the invention. By spraying a nano titanium dioxide solution in theflowering phase of litchi, or preparing a pollination solution containing nano titanium dioxide for artificial pollination to improve the natural pollination fertilization or artificial pollination condition in the litchi flowering phase, the pollination fertilization capability in the litchi flowering phase is improved, and the problem of poor pollination fertilization caused by low temperature in rainy days or drought and high temperature in the litchi flowering phase is reduced; the invention discloses application of nano titanium dioxide in a litchi flowering phase. Litchi flowering time and male and female flower encountering time can be effectively prolonged, pollen germination rate, pollen activity and stigma receptivity are improved, pollination and fertilization in the flowering phase of litchi are promoted, the capability of resisting low-temperature overcast and rainy damage or high-temperature drought in the flowering phase of litchi is enhanced, fruit setting rate is increased, spraying loss rate can be reduced, and the method is safe and nontoxic.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and in particular relates to a compound for improving pollination and fertilization ability of litchi in flowering stage and application thereof. Background technique [0002] Litchi (Litchi chinensis Sonn.) is a famous subtropical evergreen fruit tree of Sapindaceae (Sapindaceae) Litchi genus (Litchi Sonn.), which originated in China. It is known as "Lingnan Fruit King", "Human Fairy Fruit", "Buddha Fruit" and "Fruit King". my country is the country of origin of lychees and the largest producer in the world, mainly distributed in Guangdong, Guangxi, Fujian, Hainan and Taiwan, accounting for 81% and 70% of the world's total area and output 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 China. [0003] Lit...

AI Technical Summary

Problems solved by technology

During the production of litchi, the phenomenon of "flowers but not fruit" or "less fruit" often occurs, resulting in low and unstable yields. One of the main reasons for this phenomenon is that it is affected by bad weather during flowering, such as low temperature during flowering in spring. Overcast and rainy, low temperature will delay the flowering of lychees, high air humidity will affect the activities of bees, or excessive drought during the flowering period will make the nectar sticky, which is not conducive to the activities of bee vectors, resulting in poor pollination and fertilization, and in severe cases, it may lead to no harvest for the year

[0005] Although building a temporary shelter before the lychee flowering period avoids the impact of rain, it still cannot solve the problem of high air humidity and low temperature during the rainy period, and the cost is high

Using chemical regulation methods such as plant growth regulators, such as spraying putrescine (Put) on the soon-to-open female flowers during the flowering period to prolong the life of the pistils, and spraying boric acid during pollination to promote the germination and elongation of pollen tubes can improve the flower quality to a certain extent. However, the chemical reagents are sprayed on the plants in the form of water formulations. After application, only a small part is absorbed by the plants, and most of the unused parts enter the water body, soil and air along with rainwater leaching, scouring and evaporation, resulting in loss of fertilizer efficiency and environmental pollution

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