Fruit preservative and method for delaying senescence of citrus fruits and prolonging fruit bearing fresh-keeping period

Abstract

The invention discloses a fruit preservative. The fruit preservative comprises fulvic acid, algal polysaccharides and water, wherein the concentration of the fulvic acid is 400-800 ppm, and the concentration of the algal polysaccharides is 200-600 ppm. The invention further discloses a method for delaying senescence of citrus fruits and prolonging the fruit bearing fresh-keeping period. The fruitpreservative is sprayed to the citrus fruits 20-40 days before the citrus fruits are ripe and picked. After a fulvic acid / algal polysaccharide mixed preparation is sprayed to fruits on trees before picking, peel color change is delayed, the fruit ripening and senescence process is delayed, and a certain fresh-keeping effect is achieved; besides, fruit falling is not prone to occurrence, the fruitsremain on the trees, the fruit ripening and picking period is prolonged, and the contradiction that the fruits are centralized to appear on the market and rot is relieved. The fulvic acid / algal polysaccharides are safe, non-toxic, almost natural, harmless to the environment and soil and free of pollution.

Description

technical field [0001] The invention belongs to the field of agricultural technology, relates to fruit storage and fresh-keeping technology, in particular to a fruit fresh-keeping agent and a method for delaying citrus fruit aging and prolonging the fruit-hanging fresh-keeping period. Background technique [0002] The fruit harvesting of a certain fruit variety in a production area is often concentrated in the same time period. On the one hand, it makes the fruit growers have heavy harvesting work in a short period of time. Storage and transportation will cause a large amount of fruit accumulation, which is easy to rot. Spraying beneficial preparations on citrus fruit trees before fruit picking can not only prevent fruit drop and prolong the fruit-hanging time, but also change and delay the time and process of peel color change, thus playing a fresh-keeping role in delaying fruit aging. In the past, some fruit farmers used tree storage to keep some fruits fresh, that is, th...

AI Technical Summary

Problems solved by technology

In the past, some fruit farmers used tree storage to keep some fruits fresh, that is, they left the fruit on the tree and did not harvest it. The so-called "tree storage" not only sprayed pesticides on fruit trees more than once at different times, but also affected the harvest of the next year. Moreover, in order to prevent fruit drop, fruit trees are generally sprayed with hormonal agents. Excessive use of hormonal agents in the agricultural field will cause harm and pollution to the human body and the environment.

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