CN110950696A - Foliar spray for promoting calcium accumulation of watermelon fruits and preparation method thereof - Google Patents

Abstract

The invention discloses a foliar spray for promoting calcium accumulation of watermelon fruits and a preparation method thereof, belonging to the technical field of agricultural vegetable planting. The spray comprises the following components: calcium chloride, s-adenosylmethionine, spermidine and monopotassium phosphate are sprayed on leaves every seven days for 7 days in the growth process of watermelons, medium trace elements required by the growth of the watermelons are provided, the stress resistance of plants is improved, the spermidine and the s-adenosylmethionine solution in the spray can promote calcium ion absorption and transportation, the quality of produced watermelon fruits is good, the yield is high, and the calcium content of the fruits can be improved by 50% -200%.

Description

Foliar spray for promoting calcium accumulation of watermelon fruits and preparation method thereof

Technical Field

The invention belongs to the technical field of agricultural vegetable planting, and particularly relates to a foliar spray for promoting calcium accumulation of watermelon fruits and a preparation method thereof.

Background

Calcium is called as a mineral functional element with the largest content in the human body, and has an important function for maintaining the normal growth and development of the human body. The content of calcium in vegetable crops is 0.1% -5%, and the main forms of the vegetable crops comprise water-soluble calcium, pectin calcium, calcium phosphate, calcium oxalate, calcium silicate and the like. The vegetable crops have large calcium demand, and the demand of the vegetable crops in the whole growth period is large, so the vegetable crops are easily damaged by calcium deficiency. When the supply of calcitonin or the transport of calcitonin in crops is inhibited, young organs such as young leaves, fruits and the like are the sites that are first affected by calcium deficiency.

In recent years, the planting area of watermelons in facilities has been increasing continuously. Research shows that when the calcium content in the fruits is higher, the rotten fruit phenomenon in the storage period after picking can be effectively prevented, the storage period is prolonged, and the storage quality of the fruits is improved. The vegetable plant is supplemented with calcium, so that the increase of the calcium content of the outer peel, pulp and core of the fruit can be promoted, the improvement of the fruit quality can be promoted, the stability of a photosynthetic organ can be protected, higher photosynthesis can be maintained, the damage of the plant to adversity stress can be reduced, and the plant growth can be improved.

The foliar fertilizer belongs to a supplement method with higher absorption efficiency in crop topdressing, and because most of plants have luxuriant branches and leaves, the foliar fertilizer can have larger contact area with the plants by spraying the foliar fertilizer, the utilization rate is higher, the long conduction process from root systems to the leaves is not needed, and the efficiency is higher. The calcium fertilizer belongs to a fertilizer with a relatively large using amount in use, and the main sources of the existing exogenous calcium fertilizer are ammonium (ammonium) nitrate calcium, calcium chloride, sugar alcohol chelated calcium and the like. The absorption efficiency of the common calcium supplement measures is low, because the transport speed of calcium element in the plant body is slow, and when the calcium element is transported to fruits, the tail end transpiration is weak, the power for transporting the calcium element is lacked, and therefore the calcium element can not be utilized by being stranded in a large amount. Spermidine and S-adenosylmethionine have been reported in a large number in the aspects of improving stress resistance of plants, enhancing photosynthetic capacity of plants and promoting growth of plants, and have the effects of synergy and promoting absorption and transportation of calcium ions when being used in combination with calcium chloride fertilizers. Although the sugar alcohol calcium absorption utilization rate is higher, the sugar alcohol calcium foliar fertilizer is not stable and is not easy to dissolve like a solid fertilizer, and the sugar alcohol calcium foliar fertilizer is easy to react with phosphate radicals after being dissolved to generate a precipitation reduction effect, and pure sugar alcohol calcium exists in a chelating situation, so that the process requirement is strict, and the cost is relatively higher. In view of the above, the invention provides a convenient foliar spray formula for promoting calcium accumulation and transportation of watermelon fruits, and has important significance for producing calcium-rich fruits and vegetables.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to provide a foliar fertilizer for conveniently promoting calcium accumulation of watermelon fruits, improve stress resistance and solve the problem that calcium ions in the existing watermelon fruits are difficult to transport and accumulate.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a foliar spray for promoting calcium accumulation of watermelon fruits, which comprises the following components: calcium chloride, s-adenosylmethionine, spermidine, potassium dihydrogen phosphate.

Preferably, the spray further comprises zinc sulfate and boric acid.

Preferably, the concentration of calcium chloride in the spray is 6-8 mmol/L, the concentration of spermidine is 0.9-0.11 mmol/L, the concentration of S-adenosylmethionine is 0.1mmol/L, and the concentration of potassium dihydrogen phosphate is 0.1-0.2%.

Preferably, the concentration of the zinc sulfate is 0.1-0.2%, and the concentration of the boric acid is 0.1-0.3%.

The preparation method of the foliar spray for promoting calcium accumulation of the watermelon fruits comprises the following steps:

s100, preparing a solution A, and preparing a solution containing 6mmol/L of calcium chloride, 0.1-0.2% of monopotassium phosphate, 0.1-0.2% of zinc sulfate and 0.1-0.3% of boric acid;

s200, preparing a solution B, and preparing a solution containing 1g/L spermidine and 1g/L S-adenosylmethionine.

And S300, mixing, and diluting the solution B into the solution A.

A cultivation method for producing high-calcium watermelons by using sprays adopts the prepared foliar spray, and the using method comprises the following steps:

step one, seed pretreatment: soaking small watermelon red jade seeds for 10-12 hours, and fishing out after soaking;

step two, accelerating germination of seeds: sowing the soaked watermelon seeds in a substrate hole tray, putting the substrate hole tray into a constant-temperature incubator, and keeping the temperature at 30 ℃ for germination;

step three, fertilizing: applying fully-decomposed excrement, then preparing land and ridging, and planting watermelon seedlings when the watermelon seedlings grow into three leaves and one heart;

step four, spraying a spray agent: spraying the spraying agent to the leaves every 7 days after the planting for about 10 days;

step five, picking: the watermelon is picked after being ripe.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

the invention relates to a foliar spray for promoting calcium accumulation of watermelon fruits, which comprises the following components: calcium chloride, s-adenosylmethionine, spermidine and monopotassium phosphate are sprayed on leaves every seven days for 7 days in the growth process of watermelons, medium trace elements required by the growth of the watermelons are provided, the stress resistance of plants is improved, the spermidine and the s-adenosylmethionine solution in the spray can promote calcium ion absorption and transportation, the quality of produced watermelon fruits is good, the yield is high, and the calcium content of the fruits can be improved by 50% -200%.

Drawings

FIG. 1 is a flow chart of a preparation method of the foliar spray for promoting calcium accumulation of watermelon fruits.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

The foliar spray for promoting calcium accumulation of the watermelon fruits comprises the following components: the spraying agent also comprises zinc sulfate and boric acid, the concentration of the calcium chloride in the spraying agent is 6-8 mmol/L, the concentration of the spermidine is 0.9-0.11 mmol/L, the concentration of the S-adenosylmethionine is 0.1mmol/L, the concentration of the monopotassium phosphate is 0.1-0.2%, the concentration of the zinc sulfate is 0.1-0.2%, and the concentration of the boric acid is 0.1-0.3%.

Example 2

Referring to the attached figure 1, the preparation method of the foliar spray for promoting calcium accumulation of watermelon fruits comprises the following steps:

s100, preparing a solution A, and preparing a solution containing 6mmol/L of calcium chloride, 0.1-0.2% of monopotassium phosphate, 0.1-0.2% of zinc sulfate and 0.1-0.3% of boric acid;

s200, preparing a solution B, and preparing a solution containing 1g/L spermidine and 1g/L S-adenosylmethionine.

And S300, mixing, and diluting the solution B into the solution A.

The spray agent is prepared from calcium chloride, s-adenosylmethionine, spermidine, potassium dihydrogen phosphate, zinc sulfate and boric acid.

Example 3

The cultivation method for producing the high-calcium watermelon by using the spray comprises the following steps:

step one, seed pretreatment: soaking small watermelon red jade seeds for 10-12 hours, and fishing out after soaking;

step two, accelerating germination of seeds: sowing the soaked watermelon seeds in a substrate hole tray, putting the substrate hole tray into a constant-temperature incubator, and keeping the temperature at 30 ℃ for germination;

step three, fertilizing: applying fully-decomposed excrement, then preparing land and ridging, and planting watermelon seedlings when the watermelon seedlings grow into three leaves and one heart;

step four, spraying a spray agent: spraying the spraying agent to the leaves every 7 days after the planting for about 10 days;

step five, picking: the watermelon is picked after being ripe.

In the fourth step, the spraying agent is used for controlling the fruit setting quantity of the plants to be 1-2.

In the embodiment, the spraying agent is sprayed to the leaves every seven days for 7 days in the growth process of the watermelon, so that medium and trace elements required by the growth of the watermelon are provided, the soil environment is improved, the spermidine and the s-adenosylmethionine solution in the spraying agent can promote the absorption and the transportation of calcium ions, the stress resistance of plants can be improved, the quality of the produced watermelon fruits is good, the yield is high, and the calcium content of the fruits can be improved by 50% -200%.

The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, variations and modifications can be made without departing ┅ from the inventive concept, which falls within the scope of the invention; therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (6)

1. The foliar spray for promoting the calcium accumulation of the watermelon fruits is characterized by comprising the following components: calcium chloride, s-adenosylmethionine, spermidine, potassium dihydrogen phosphate.

2. The foliar spray for promoting calcium accumulation of watermelon fruits according to claim 1, which is characterized in that: the spray also comprises zinc sulfate and boric acid.

3. The foliar spray for promoting calcium accumulation of watermelon fruits according to claim 2, which is characterized in that: the concentration of calcium chloride in the spray is 6-8 mmol/L, the concentration of spermidine is 0.9-0.11 mmol/L, the concentration of S-adenosylmethionine is 0.1mmol/L, and the concentration of potassium dihydrogen phosphate is 0.1-0.2%.

4. The foliar spray for promoting calcium accumulation of watermelon fruits according to claim 3, which is characterized in that: the concentration of the zinc sulfate is 0.1-0.2%, and the concentration of the boric acid is 0.1-0.3%.

5. A preparation method of a foliar spray for promoting calcium accumulation of watermelon fruits is characterized in that the foliar spray of claim 4 is adopted, and the method comprises the following steps:

s100, preparing a solution A, and preparing a solution containing 6mmol/L of calcium chloride, 0.1-0.2% of monopotassium phosphate, 0.1-0.2% of zinc sulfate and 0.1-0.3% of boric acid;

s200, preparing a solution B, and preparing a solution containing 1g/L spermidine and 1g/L S-adenosylmethionine;

and S300, mixing, and diluting the solution B into the solution A.

6. A cultivation method for producing high-calcium watermelons by using a spray is characterized by comprising the following steps: the foliar spray prepared by the above claim 5, the using method comprising the steps of:

step one, seed pretreatment: soaking small watermelon red jade seeds for 10-12 hours, and fishing out after soaking;

step two, accelerating germination of seeds: sowing the soaked watermelon seeds in a substrate hole tray, putting the substrate hole tray into a constant-temperature incubator, and keeping the temperature at 30 ℃ for germination;

step three, fertilizing: applying fully-decomposed excrement, then preparing land and ridging, and planting watermelon seedlings when the watermelon seedlings grow into three leaves and one heart;

step four, spraying a spray agent: spraying the spraying agent to the leaves every 7 days after the planting for about 10 days;

step five, picking: the watermelon is picked after being ripe.

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