Summer orange winter fruit retention reagent and preparation method thereof

Abstract

The invention relates to a summer orange winter fruit retention reagent and a preparation method thereof, belonging to the technical field of citriculture and aiming at solving the technical problems of summer orange winter fruit drop, 2.4-D residue and the like. The summer orange winter fruit retention reagent comprises the following components in parts by weight: 4.5-6.2 parts of diethyl aminoethyl hexanoate, 3.1-4.6 parts of sodium naphthaleneacetate, 1.3-2.0 parts of sodium bicarbonate, 28.0-42.0 parts of compound amino acid powder, 16.0-22.0 parts of calcium nitrate, 12.0-15.0 parts of zinc sulfate and 20.0-24.0 parts of ammonium ferrous sulfate. The summer orange winter fruit retention reagent disclosed by the invention has the advantages of simple preparation process, low cost, convenience for use and preferable winter fruit drop control effect, can be used for substituting for the traditional 2.4-D fruit retention method, reducing the hormone residue of a fruit and achieving preferable social and economic benefit and has wide application prospect in a late-maturing citrus production area in upper stream and middle stream of Yangtze River.

Description

technical field [0001] The invention relates to a summer orange winter fruit preservation agent and a preparation method thereof, belonging to the technical field of citrus cultivation. Background technique [0002] The fruit-hanging time of summer orange is long, and the tree needs to be kept overwintering. Due to the low temperature in winter, the relative dormancy of the citrus tree is promoted, and the fruit stalk is detached, resulting in a large number of fruit drop in winter. In the Three Gorges reservoir area, the fruit drop rate of summer orange in winter reaches 35%-50%. . In large-scale production, the 2.4-D solution of 30ppm-60ppm is usually sprayed in autumn and winter to prevent summer orange fruit drop in winter, and the winter fruit drop rate is controlled at about 15%. This method has a good effect on maintaining summer orange output; but 2.4 -D has a large amount of residues in the fruit and a long residue time. It has teratogenic and carcinogenic properti...

AI Technical Summary

Problems solved by technology

In large-scale production, the 2.4-D solution of 30ppm-60ppm is usually sprayed in autumn and winter to prevent summer orange fruit drop in winter, and the winter fruit drop rate is controlled at about 15%. This method has a good effect on maintaining summer orange output; but 2.4 -D has a large amount of residues in the fruit and a long residue time. It has teratogenic and carcinogenic properties and is not good for human health. According to the "NY / T5105-2002 Technical Regulations for Pollution-free Food Citrus Production" and other standards, the use of 2.4-D, etc. has been banned. high residual phytohormones

At present, a single plant or a single row of film is also used to increase the temperature of the canopy to preserve the summer orange fruit in winter, which overcomes the hormone residue of the fruit and achieves a control effect of 10%-15% of the winter fruit drop rate; but this method requires a lot of labor and High cost, difficult to promote on a large scale in areas with increasing labor shortage

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