Spray for preventing and treating fruit size and preparation method and application thereof

Abstract

The invention relates to spray for preventing and treating fruit size and a preparation method and application thereof, and belongs to the technical field of fruit growth regulators. The spray comprises powder and a solvent which are mixed according to the weight ratio of 1: (1400-1600), wherein the powder comprises the following components in parts by weight: 9 to 11 parts of alginic acid, 0.013to 0.017 part of gibberellin A4+7, 9 to 11 parts of magnesium sulfate, 4 to 6 parts of sodium borate, 9 to 11 parts of amino acid and 17 to 19 parts of calcium nitrate. The application method comprises the following steps: (1) spraying 30-45kg / mu of leaves at the beginning of a flowering phase, and (2) spraying 45-60kg / mu of leaves for the second time every 6-8 days after spraying for the first time. The spray for preventing and treating the large and small fruits can enable the fruits to grow and expand smoothly and uniformly, and the quantity of the small fruits is obviously reduced.

Description

technical field [0001] The invention relates to a spray for preventing and controlling fruit size grains and its preparation method and application, which belong to the technical field of fruit length regulators. Background technique [0002] The size of the fruit refers to the uneven size of the fruit after the plant fades. With the expansion of the normal fruit, the small fruit stops growing or even falls off. The problem caused by the size of the fruit is more serious. The quality of the small fruit (commonly known as the stillborn fruit) is less than a quarter of the normal fruit quality, and most of them fall off before maturity, and the small fruit that barely remains has almost no edible part inside. The problem of fruit size and grains leads to low yield despite many fruit sets, which will eventually lead to a serious reduction in production and a decline in the income of fruit farmers. [0003] Taking grapes as an example, the normal fruit weight is about 20g~30g p...

AI Technical Summary

Problems solved by technology

In addition, since grapes are sold in bunches, when there are many small fruits on a bunch of grapes, it will affect the appearance of the grapes, resulting in downgrading and price reduction of grapes, affecting the commerciality of grapes

Taking cherries as an example, the fruit setting rate of cherries determines the yield of cherries, and the stillborn cherries formed after fruit setting will not grow up. Once this problem occurs, it will occur in a large area and many fruit trees at the same time, which will eventually lead to a decrease in cherry production.

[0004] The applicant has found through research that the existing methods for preventing and controlling fruit-sized grains have the following problems: the existing methods and preparations for preventing and controlling fruit-sized grains have unsatisfactory effects

First, in the prior art, the method of applying soil-expanding fruit fertilizer is mostly used, which makes the effect of fruit expansion not obvious, and what is more, increasing the application of potassium fertilizer to achieve the purpose of fruit expansion not only does not solve the problem, but causes the element Antagonism, soil salinization, deterioration of soil physical properties, etc.

The fruit setting rate can basically determine the number of fruits produced; the problem of size and grain after fruit setting is equivalent to reducing the fruit setting rate, that is, the effect of preventing and controlling the problem of fruit size and grain is not ideal

Second, although there are spray designs in the prior art, most of them are mainly sprayed with boron and calcium, which is not ideal for the prevention and treatment of fruit size and grain problems.