CN115152540A - Watermelon courtyard potting method - Google Patents

Abstract

The invention relates to the field of agricultural planting, in particular to a method for potting watermelons in courtyards, which comprises the following steps: the method comprises the following steps of (1) location and time, (2) variety selection, (3) seedling raising, (4) culture medium and potting, (5) transplanting, (6) seedling stage management, (7) expanding period management, (8) flowering and fruiting stage management, (9) pest control and (10) harvesting; the invention can effectively reduce the incidence of plant diseases and insect pests, improve the quality of the watermelon, integrate entertainment, ornamental and edible properties through a courtyard pot culture mode, and effectively play a role in relieving the living pressure and regulating physical and mental health.

Description

Watermelon courtyard potting method

Technical Field

The invention relates to the field of agricultural planting, in particular to a method for potting watermelons in courtyards.

Background

The household courtyard fruit and vegetable planting can enjoy green fruits and vegetables, beautify living space, cultivate sentiment, relieve living pressure and adjust physical and mental health, and becomes a new life fashion. Potted fruits and vegetables have become increasingly attractive in home gardening as a new trend. The garden potted watermelon integrates entertainment, ornamental and edible properties and is favored by people.

However, due to the limitation of the pot body and different courtyard environmental conditions, the cultivation technology is different from other fruits and vegetables and field watermelons, the technical requirement is higher and more accurate, and the novel courtyard pot culture method for the watermelons is developed.

Disclosure of Invention

Technical problem to be solved

The invention provides a garden potted plant method for watermelons, which can effectively reduce the incidence rate of plant diseases and insect pests and improve the quality of watermelons, integrates entertainment, ornamental value and edibility through a garden pot, and can effectively play roles in relieving living pressure and regulating physical and psychological health.

(II) the adopted technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a watermelon yard potting method comprises the following steps:

(1) Location and time

The flowerpot is placed on a land block with sufficient sunlight in the courtyard, and the sowing time is selected from 3 late-7 middle-late months;

(2) Variety selection

Selecting 1.5kg-2kg of small high-quality watermelon varieties of red flesh, yellow flesh and colored flesh;

(3) Seedling raising

The seedling raising medium is a commodity seedling raising medium special for fruits and vegetables, watermelon seeds are soaked in warm water at 55 ℃ for 30min and then soaked in water at 25-30 ℃ for 4h, the seeds are fished out, dried in the air and placed at 28-30 ℃ for accelerating germination until white, then the seeds are sowed in a nutrition pot, 2 seeds are sowed in each pot, the distance between 2 seeds is more than 1cm, watering is conducted thoroughly, the daily daytime temperature is kept at 25-30 ℃, the nighttime temperature is kept at 18-25 ℃, the medium in the nutrition pot is kept moist, 1 healthy seedling is left after the cotyledon of the seedling is spread, the other seedling is cut off, and the seedling can be transplanted when 3 leaves and 1 heart grow;

(4) Culture medium and potting

Purchasing a special commodity cultivation substrate for fruits and vegetables produced by a regular manufacturer, sprinkling water and stirring the substrate until the substrate is held by hands to form a cluster and water is reserved between fingers but not dropped, filling the substrate into a flowerpot, and watering the substrate thoroughly, wherein the distance between the substrate and the opening of the flowerpot is 2cm-3 cm;

(5) Transplanting

Transplanting watermelon seedlings into flowerpots in the evening or in the cloudy day, wherein the planting depth does not exceed the growing point, 1L of water soluble fertilizer is poured into 1 seedling in each pot in an amount which is 800 times that of the seedlings, a black mulching film is covered on the pot, the mulching film at the positions of the seedlings is broken by about 8cm, and the seedlings are exposed;

(6) Management of seedling stage

The substrate is kept moist after the seedling is revived, the moisture content is about 70 percent, the substrate is not watered, the substrate is thoroughly watered when the substrate is watered, the fertilizer is not applied during the seedling stage, the sun-shading net can be used for shading the strong illumination, the medium to heavy rain or continuous light rain weather can be used for covering the substrate by plastic cloth, and the substrate is prevented from being washed away by rainwater;

(7) Management of the season of elongation

In the watermelon vine stretching period, when the watermelon vine is about 30cm, hanging the vine to grow, inserting a bamboo rod with the length of about 2m into the inner edge of a flowerpot, winding the main vine on the bamboo rod, and then binding the vine once every 20cm along with the growth of the vine;

(8) Management of flowering and fruiting periods

The method comprises the following steps of (1) not topdressing in the flowering period, controlling watering, selecting female and male flowers flowering on the same day before 10 am to carry out artificial supplementary pollination, lightly coating pollen of the male flowers on stigmas of the female flowers, recording the pollination date, removing the first female flowers in time, generally selecting the second female flowers of a main vine to bear fruits, only leaving one fruit, removing the fruits at redundant nodes, leaving 15 leaves above the nodes of the bearing fruits for pinching, preferentially carrying out main vine bearing fruits, selecting lateral vine bearing fruits when the main vine does not bear the fruits, topdressing 800 times of high-potassium water-soluble fertilizer when the eggs of young fruits begin to lose the hairs, and then topdressing 1 time of water-soluble fertilizer and monopotassium phosphate every 5d-7d to facilitate fruit expansion and prevent early senescence of leaves;

(9) Pest control

The watermelon in the garden has less plant diseases and insect pests, can cover an insect-proof net to prevent insects, can be sprayed with imidacloprid and acetamiprid to prevent and treat aphid and whitefly, and can be sprayed with 800-time liquid of 50 percent carbendazim or 75 percent chlorothalonil to prevent and treat gummy stem blight, anthracnose or powdery mildew;

(10) Harvesting

When the watermelon fruit is not enlarged any more, the surface pattern of the peel is clear and is rich in luster, most of villi on the fruit stem falls off and fades, and the watermelon is harvested in time when the fruit stem slightly shrinks to prevent the pulp from falling, the temperature in the growing period influences the whole growth period of the watermelon, and the harvesting time is about 20d-25d after pollination.

(III) advantageous effects

The invention provides a method for potting watermelons in a courtyard, which has the following beneficial effects:

by adopting the courtyard pot culture method, the invention can improve the quality of the watermelon, endow the watermelon with more human colors, watch leaves in the early period, watch flowers in the middle period, identify fruits in the later period, beautify the living environment of people, and effectively play roles of relieving the living pressure and regulating the physical and mental health.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Example 1

A watermelon yard potting method comprises the following steps:

(1) Location and time

The flowerpot is placed in a land block with sufficient sunlight in the courtyard, and the sowing time is selected from 3 late ten days;

(2) Variety selection

Selecting 1.5kg-2kg of small high-quality watermelon varieties with red flesh, yellow flesh and colorful flesh (such as small red-flesh watermelon variety Sumeng No. 6);

(3) Seedling raising

The seedling raising medium is a commodity seedling raising medium special for fruits and vegetables, watermelon seeds are soaked in warm water at 55 ℃ for 30min and then soaked in water at 25 ℃ for 4h, the seeds are fished out, dried in the air, placed at 28 ℃ for accelerating germination until white, and then sowed in a nutrition pot, 2 seeds are sowed in each pot, the distance between 2 seeds is more than 1cm, watering is conducted thoroughly, the daily daytime temperature is kept at 25-28 ℃, the nighttime temperature is kept at 18-22 ℃, the medium in the nutrition pot is kept moist, 1 healthy seedling is left after the cotyledon of the seedling is flat, the other seedling is cut off, and the seedling can be transplanted when 3 leaves and 1 heart grow;

(4) Culture medium and potting

Purchasing a special commodity cultivation substrate for fruits and vegetables produced by a regular manufacturer, spraying water and stirring the substrate until the substrate is held by hands to form a cluster and water is reserved between fingers but not dropped, filling the substrate into a flowerpot, wherein the substrate is 2cm away from a pot opening, and spraying the substrate thoroughly;

(5) Transplanting

Transplanting watermelon seedlings into flowerpots in the evening or in the cloudy day, wherein the planting depth does not exceed the growing point, 1L of water soluble fertilizer is poured into 1 seedling in each pot in an amount which is 800 times that of the seedlings, a black mulching film is covered on the pot, the mulching film at the positions of the seedlings is broken by about 8cm, and the seedlings are exposed;

(6) Management of seedling stage

The substrate is kept moist after the seedling is revived, the water content is about 70 percent, the substrate is not watered, the substrate is thoroughly watered when the substrate is not watered, the substrate is not fertilized during the seedling stage, the substrate can be shaded by a shading net when the substrate is strongly illuminated, and the substrate can be covered by plastic cloth to prevent rainwater washing when the substrate is in heavy rain or in continuous light rain;

(7) Management of the season of elongation

In the watermelon vine stretching period, when the watermelon vine is about 30cm, hanging the main vine to grow, tying the lower end of a vine winding rope at the root of a watermelon plant, winding the vine on the rope, remaining a main vine and two strong lateral vines by adopting a three-vine type branch pruning, watering 800 times of macroelement water-soluble fertilizer for 1 time in the vine stretching period, controlling watering amount without drying, keeping the water content of a matrix to be 60-70 percent, preventing the vine from growing in vain, and covering by plastic cloth in the case of medium to heavy rain or continuous light rain;

(8) Management of flowering and fruiting period

The method comprises the steps of performing fertilization on female and male flowers in the flowering period, controlling watering, selecting female and male flowers flowering in the same day before 10 am, performing artificial supplementary pollination, lightly coating pollen of the male flowers on the stigma of the female flowers, recording the pollination date, removing the first female flowers in time, generally selecting the second female flowers of a main vine to bear fruits, only leaving one fruit, removing the fruits at the redundant nodes, leaving 15 leaves above the fruit bearing nodes for pinching, preferentially bearing the fruits on the main vine, selecting lateral vine to bear the fruits when the main vine does not bear the fruits, dressing 800 times of high-potassium water-soluble fertilizer when the eggs of young fruits begin to lose hair, dressing 1 time of water-soluble fertilizer and monopotassium phosphate at intervals of 5 days later to facilitate fruit enlargement and prevent premature leaf senescence, keeping the substrate humidity at 70-80%, hanging melons by using a mesh bag about 0.3kg of fruits to prevent the vines from falling, and covering by plastic cloth when heavy rain occurs or continuous light rain;

(9) Pest control

The watermelon in the garden has less plant diseases and insect pests, can cover an insect-proof net to prevent insects, can be sprayed with imidacloprid and acetamiprid to prevent and treat aphid and whitefly, and can be sprayed with 800-time liquid of 50 percent carbendazim or 75 percent chlorothalonil to prevent and treat gummy stem blight, anthracnose or powdery mildew;

(10) Harvesting

When the watermelon fruits are not enlarged any more, the surface patterns of the peel are clear and have luster, most of villi on the fruit stem fall off and fade, and the watermelon is harvested in time when the fruit stem slightly shrinks to prevent the pulp from falling, the temperature in the growing period influences the full growth period of the watermelon, and the harvesting time is about 23 days after pollination.

Example 2

A watermelon yard potting method comprises the following steps:

(1) Location and time

The flowerpot is placed on a land block with sufficient sunlight in the courtyard, and the sowing time is selected from 5 middle-month ten days;

(2) Variety selection

Selecting 1.5kg-2kg of high-quality small-fruit type watermelons with red pulp, yellow pulp and colorful pulp (such as Sumi No. 8 variety of small-fruit type watermelons with yellow pulp);

(3) Seedling raising

The seedling culture medium is a commodity seedling culture medium special for fruits and vegetables, watermelon seeds are soaked in warm water at 55 ℃ for 30min and then soaked in water at 27 ℃ for 4h, the seeds are fished out, dried in the air, placed at 29 ℃ for accelerating germination until white, and then sowed in a nutrition pot, 2 seeds are sowed in each pot, the distance between 2 seeds is more than 1cm, watering is conducted thoroughly, the daily daytime temperature is kept at 25-30 ℃, the nighttime temperature is kept at 20-23 ℃, the medium in the nutrition pot is kept moist, 1 healthy seedling is left after the cotyledon of the seedling is flat, the other seedling is cut off, and the seedling can be transplanted when 3 leaves and 1 heart grow;

(4) Culture medium and potting

Purchasing a special commodity cultivation substrate for fruits and vegetables produced by a regular manufacturer, sprinkling water and stirring the substrate until the substrate is held by hands to form a cluster and water is reserved between fingers but not dropped, and filling the substrate into a flowerpot, wherein the substrate is 2.5cm away from the opening of the flowerpot and is watered thoroughly;

(5) Transplanting

Transplanting watermelon seedlings into flowerpots in the evening or in the cloudy day, wherein the planting depth does not exceed the growing point, 1L of water soluble fertilizer is poured into 1 seedling in each pot in an amount which is 800 times that of the seedlings, a black mulching film is covered on the pot, the mulching film at the positions of the seedlings is broken by about 8cm, and the seedlings are exposed;

(6) Management of seedling stage

The substrate is kept moist after the seedling is revived, the moisture content is about 70 percent, the substrate is not watered, the substrate is thoroughly watered when the substrate is watered, the fertilizer is not applied during the seedling stage, the sun-shading net can be used for shading the strong illumination, the medium to heavy rain or continuous light rain weather can be used for covering the substrate by plastic cloth, and the substrate is prevented from being washed away by rainwater;

(7) Management of the season of staling

In the watermelon vine stretching period, when the watermelon vine is about 30cm, hanging the vine to grow, inserting a bamboo rod with the length of about 2m into the inner edge of a flowerpot, winding the main vine on the bamboo rod, binding the vine once every 20cm along with the growth of the vine, remaining a main vine and two robust lateral vines by adopting a three-vine type branch pruning method, pouring 800 times of macroelement water-soluble fertilizer for 1 time in the vine stretching period, not watering, controlling the watering amount, keeping the water content of a matrix 65 percent, preventing the excessive growth of the watermelon vine, and covering with plastic cloth in case of moderate to heavy rain or continuous light rain;

(8) Management of flowering and fruiting period

The method comprises the steps of performing artificial supplementary pollination on female and male flowers flowering on the same day before 10 am, lightly applying pollen of the male flowers to stigmas of the female flowers, recording the pollination date, removing the first female flowers in time, generally selecting the second female flowers of a main vine to bear fruits, only leaving one fruit, removing the fruits at the redundant nodes, leaving 15 leaves above the bearing nodes for pinching, preferentially dressing the fruits on the main vine, selecting lateral vine to bear fruits when the main vine does not bear the fruits, dressing a high-potassium water-soluble fertilizer 800 times when the eggs of young fruits begin to lose hair, dressing a water-soluble fertilizer 1 time and a potassium dihydrogen phosphate foliar fertilizer every 5d-7d later to facilitate fruit expansion and prevent early leaf senescence, keeping the substrate humidity of 70-80 fruits, hanging melons by using a mesh bag about 0.3kg to prevent the melons from falling, and covering the melons by using plastic cloth in case of heavy rain or continuous light rain;

(9) Pest control

The watermelon in the garden has less plant diseases and insect pests, can cover an insect-proof net to prevent insects, can be sprayed with imidacloprid and acetamiprid to prevent and treat aphid and whitefly, and can be sprayed with 800-time liquid of 50 percent carbendazim or 75 percent chlorothalonil to prevent and treat gummy stem blight, anthracnose or powdery mildew;

(10) Harvesting

When the watermelon fruit is not enlarged any more, the surface pattern of the peel is clear and is rich in luster, most of villi on the fruit stem falls off and fades, and the watermelon is harvested in time when the fruit stem slightly shrinks to prevent the pulp from falling, the temperature in the growing period influences the full growth period of the watermelon, and the harvesting time is about 21 days after pollination.

Example 3

A watermelon garden pot culture method comprises the following steps:

(1) Location and time

The flowerpot is placed on a sunny land block in the courtyard, and the sowing time is selected in 7 middle of the month;

(2) Variety selection

Selecting 1.5kg-2kg of watermelon varieties with red pulp, yellow pulp and colorful pulp and high-quality small fruit types (such as selecting the colorful pulp and small fruit type watermelon variety Jingcai);

(3) Seedling raising

The seedling raising medium is a commodity seedling raising medium special for fruits and vegetables, watermelon seeds are soaked in warm water at 55 ℃ for 30min and then soaked in water at 30 ℃ for 4h, the seeds are fished out, dried in the air, placed at 30 ℃ for accelerating germination until white, and then sowed in a nutrition pot, 2 seeds are sowed in each pot, the distance between 2 seeds is more than 1cm, watering is conducted thoroughly, the daily daytime temperature is kept at 26-30 ℃, the nighttime temperature is kept at 23-25 ℃, the medium in the nutrition pot is kept moist, 1 healthy seedling is left after the cotyledon of the seedling is flat, the other seedling is cut off, and the seedling can be transplanted when 3 leaves and 1 heart grow;

(4) Culture medium and potting

Purchasing a special commodity cultivation substrate for fruits and vegetables produced by a regular manufacturer, sprinkling water and stirring the substrate until the substrate is held by hands to form a cluster and water is reserved between fingers but not dropped, filling the substrate into a flowerpot, wherein the substrate is 3cm away from a pot opening, and watering the flowerpot thoroughly;

(5) Transplanting

Transplanting watermelon seedlings into flowerpots in the evening or in cloudy days, wherein the planting depth does not exceed the growing point, 1L of water soluble fertilizer is poured into 1 pot by 800 times of the seedlings in each pot, a black mulching film is covered on the pot, the mulching film at the positions of the seedlings is broken by about 8cm, and the seedlings are exposed;

(6) Management of seedling stage

The substrate is kept moist after the seedling is revived, the moisture content is about 70 percent, the substrate is not watered, the substrate is thoroughly watered when the substrate is watered, the fertilizer is not applied during the seedling stage, the sun-shading net can be used for shading the strong illumination, the medium to heavy rain or continuous light rain weather can be used for covering the substrate by plastic cloth, and the substrate is prevented from being washed away by rainwater;

(7) Management of the season of elongation

In the watermelon vine stretching period, when the watermelon vine is about 30cm, hanging the main vine for growing, inserting a bamboo rod with the length of about 2m into the inner edge of a flowerpot, winding the main vine on the bamboo rod, binding the vine once every 20cm along with the growth of the watermelon vine, remaining a main vine and two robust lateral vines by adopting a three-vine type branch pruning method, pouring 800 times of macroelement water-soluble fertilizer for 1 time in the vine stretching period, not watering, controlling the watering amount, keeping the water content of a matrix at 70 percent, preventing the excessive growth of the watermelon vine, and covering with plastic cloth in the case of medium-to-heavy rain or continuous light rain;

(8) Management of flowering and fruiting periods

The method comprises the steps of performing fertilization on female and male flowers in the flowering period, controlling watering, selecting female and male flowers flowering in the same day before 10 am, performing artificial supplementary pollination, lightly coating pollen of the male flowers on the stigma of the female flowers, recording the pollination date, removing the first female flowers in time, generally selecting the second female flowers of a main vine to bear fruits, only leaving one fruit, removing the fruits at the redundant nodes, leaving 15 leaves above the fruit bearing nodes for pinching, preferentially bearing the fruits on the main vine, selecting lateral vine to bear the fruits when the main vine does not bear the fruits, dressing 800 times of high-potassium water-soluble fertilizer when the eggs of young fruits begin to lose hair, dressing 1 time of water-soluble fertilizer and monopotassium phosphate at intervals of 7 days later to facilitate fruit enlargement and prevent premature leaf senescence, keeping the substrate humidity at 70-80%, hanging melons by using a mesh bag about 0.3kg of fruits to prevent the vines from falling, and covering by plastic cloth when heavy rain occurs or continuous light rain;

(9) Pest control

The garden watermelons have fewer diseases and insect pests, insect nets can be covered for insect prevention, imidacloprid and acetamiprid can be used for spray control if aphids and trialeurodes vaporariorum do harm, and 50% carbendazim or 75% chlorothalonil 800-fold liquid can be used for spray control if gummy stem blight, anthracnose or powdery mildew occur;

(10) Harvesting

When the watermelon fruit is not enlarged any more, the surface pattern of the peel is clear and is rich in luster, most of villi on the fruit stem falls off and fades, and the watermelon is harvested in time when the fruit stem slightly shrinks to prevent the pulp from falling, the temperature in the growing period influences the whole growth period of the watermelon, and the harvesting time is about 20d-22d after pollination.

Having thus described the basic teachings of the present invention, many extensions and variations will be apparent to those of ordinary skill in the art. As the present invention disclosed in the specification may be embodied in other specific forms without departing from the spirit or general characteristics thereof, and it is noted that some of these specific forms have been set forth, the embodiments disclosed in the specification should be considered as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.

Claims (1)

1. A watermelon courtyard potting method is characterized by comprising the following steps:

(1) Location and time

The flowerpot is placed on a land block with sufficient sunlight in the courtyard, and the sowing time is selected from 3 late-7 middle-late months;

(2) Variety selection

Selecting 1.5kg-2kg of high-quality small-fruit type watermelons with red pulp, yellow pulp and colorful pulp;

(3) Seedling raising

The seedling raising medium is a commodity seedling raising medium special for fruits and vegetables, watermelon seeds are soaked in warm water at 55 ℃ for 30min and then soaked in water at 25-30 ℃ for 4h, the seeds are fished out, dried in the air and placed at 28-30 ℃ for accelerating germination until white, then the seeds are sowed in a nutrition pot, 2 seeds are sowed in each pot, the distance between 2 seeds is more than 1cm, watering is conducted thoroughly, the daily daytime temperature is kept at 25-30 ℃, the nighttime temperature is kept at 18-25 ℃, the medium in the nutrition pot is kept moist, 1 healthy seedling is left after the cotyledon of the seedling is spread, the other seedling is cut off, and the seedling can be transplanted when 3 leaves and 1 heart grow;

(4) Culture medium and potting

Purchasing a special commodity cultivation substrate for fruits and vegetables produced by a regular manufacturer, watering and stirring the substrate until the substrate is held by hands to form a cluster and water is reserved between fingers but not dropped, filling the substrate into a flowerpot, and watering the substrate until the substrate is 2-3 cm away from the opening of the flowerpot and the substrate is thoroughly soaked;

(5) Transplanting

Transplanting watermelon seedlings into flowerpots in the evening or in the cloudy day, wherein the planting depth does not exceed the growing point, 1L of water soluble fertilizer is poured into 1 seedling in each pot in an amount which is 800 times that of the seedlings, a black mulching film is covered on the pot, the mulching film at the positions of the seedlings is broken by about 8cm, and the seedlings are exposed;

(6) Management of seedling stage

The substrate is kept moist after the seedling is revived, the moisture content is about 70 percent, the substrate is not watered, the substrate is thoroughly watered when the substrate is watered, the fertilizer is not applied during the seedling stage, the sun-shading net can be used for shading the strong illumination, the medium to heavy rain or continuous light rain weather can be used for covering the substrate by plastic cloth, and the substrate is prevented from being washed away by rainwater;

(7) Management of the season of staling

In the watermelon vine stretching period, when the watermelon vine is about 30cm, hanging the vine to grow, inserting a bamboo rod with the length of about 2m into the inner edge of a flowerpot, winding the vine on the bamboo rod, or winding the vine by adopting a vine-climbing frame, and then binding the vine once every 20cm along with the growth of the vine;

(8) Management of flowering and fruiting periods

The method comprises the steps of performing artificial supplementary pollination on female and male flowers flowering on the same day before 10 am, lightly applying pollen of the male flowers to stigmas of the female flowers, recording the pollination date, removing the first female flowers in time, generally selecting the second female flowers of a main vine to bear fruits, only leaving one fruit, removing the fruits at the redundant nodes, leaving 15 leaves above the bearing nodes for pinching, preferentially dressing the fruits on the main vine, selecting lateral vine to bear fruits when the main vine does not bear the fruits, dressing a high-potassium water-soluble fertilizer 800 times when the eggs of young fruits begin to lose hair, dressing a water-soluble fertilizer 1 time and a potassium dihydrogen phosphate foliar fertilizer every 5d-7d later to facilitate fruit expansion and prevent early leaf senescence, keeping the substrate humidity of 70-80 fruits, hanging melons by using a mesh bag about 0.3kg to prevent the melons from falling, and covering the melons by using plastic cloth in case of heavy rain or continuous light rain;

(9) Pest control

The watermelon in the garden has less plant diseases and insect pests, can cover an insect-proof net to prevent insects, can be sprayed with imidacloprid and acetamiprid to prevent and treat aphid and whitefly, and can be sprayed with 800-time liquid of 50 percent carbendazim or 75 percent chlorothalonil to prevent and treat gummy stem blight, anthracnose or powdery mildew;

(10) Harvesting

When the watermelon fruit is not enlarged any more, the surface pattern of the peel is clear and is rich in luster, most of villi on the fruit stem falls off and fades, and the watermelon is harvested in time when the fruit stem slightly shrinks to prevent the pulp from falling, the temperature in the growing period influences the whole growth period of the watermelon, and the harvesting time is about 20d-25d after pollination.