High-efficiency anti-fruit cracking agent for longan and leechee and preparation method thereof

Abstract

The invention relates to a high-efficiency anti-fruit cracking agent for longan and leechee and a preparation method of the anti-cracking agent. The agent of the invention aims to solve the problem that commodity value of fruits of the longan and the leechee in the south of the Five Ridges is lost because fruit peels are cracked due to various reasons such as weather, physiology and the like, wherein the growth of the fruits of the longan and the leechee is promoted and the senescence of the fruit peels of the longan and the leechee is delayed through combining with the development characteristics of the fruits of the longan and the leechee and applying different plant cytokinins, gibberellin and nutrient element; and the toughness of the fruits of the longan and the leechee is increased through increasing calcium. The agent is faint light yellow liquid and comprises the following plant active material compositions by weight percentage: 0.1-0.4% and 0.4-1.6% of plant cytokinins, 0.15-0.6% of the gibberellin and 5-16%of calcium chloride. The agent has the advantages of stability in physicochemical properties and bioactivity, no toxic side effect, no phytotoxicity and no burning; when the agent diluted by a factor of 200-4000 is sprayed to the fruits of the longan and the leechee in the period from the blossom falling to fruit ripening of the longan and the leechee, significant effect of fruit cracking resistance is provided; in addition, the fruit cracking problem of orange, mango, carambola and the like can also be solved.

Description

technical field [0001] The invention relates to an anti-cracking agent for longan and litchi, in particular to a high-efficiency anti-cracking agent for longan and litchi and a preparation method thereof, belonging to the technical field of fruit anti-cracking. Background technique [0002] Longan and lychee are the best fruits in Lingnan, and they are also the economic tree species that fruit farmers in South China prefer to grow to become rich and well-off. However, longan and lychee have high technical requirements for planting, and the climate and external environment have a great impact on them. The fruit of longan and lychee is particularly prominent when they are swollen and mature. Most of the period is after May, when the growth rate of flesh and flesh inside the fruit is faster than that of the fruit skin. After May, it is often rainy and typhoon season in Lingnan area. Due to the heavy rain, the skin of longan and litchi is cracked. Fruit cracking, rainwater and...

AI Technical Summary

Problems solved by technology

[0002] Longan and litchi are the best fruits in Lingnan, and they are also the economic tree species preferred by fruit farmers in South China to grow rich and well-off. It has a great impact, especially the swelling and ripening period of longan and litchi fruits mostly after May. At this time, the growth rate of the inner flesh of the fruit is faster than the growth rate of the peel. After May, it is often rainy and typhoon season in Lingnan area. , impel longan, litchi peel cracking, a large number of longan, litchi fruit due to fruit cracking, rainwater and bacteria enter the fruit interior through the fruit crack, causing longan, litchi fruit to rot on the tree, lose commodity value, sometimes the fruit cracking rate reaches more than 60% (even 90% cracked fruit), resulting in reduced or no harvest for fruit growers

In order to solve the problem of a large number of cracked fruits of longan and litchi, fruit growers usually spray calcium to enhance the toughness of longan and litchi fruit peels to reduce cracking. Although spraying calcium has a certain effect on preventing cracking, it is difficult to prevent frequent typhoons and rainy weather. Seasonal Lingnan still cannot solve the problem of a large number of cracked fruits of longan and litchi, so it is necessary to study and prepare high-efficiency anti-cracking agents for longan and litchi