Daxing watermelon

Beijing Daxing is known as the “Hometown of Chinese Watermelon” and “Daxing Watermelon” has long been a brand trusted by Beijing residents. Daxing watermelon has a long history of cultivation. During the Taiping period of 1000 years ago, Daxing had a history of cultivating watermelon. Geographical indication products--national standards clearly specify the varieties of Daxing watermelons.

Watermelon, also known as water melons, melons, summer melons, called "the king of melons", because it was introduced in the Han Dynasty from the Western Regions, it is called "watermelon." Watermelon tastes sweet and juicy, refreshing and thirst-quenching, is a fruit of midsummer. Except fat and cholesterol, watermelon contains almost all kinds of nutritious ingredients required by the human body. It is one of the most nutritious, purest, and safest to eat.

effect

Watermelon can clear away heat and relieve thirst. Watermelon contains a large amount of water. When there is fever, thirst, sweat, and irritability in an acute fever, eating a piece of watermelon that is sweet and sandy and full of moisture will immediately improve the symptoms.

In the treatment of nephritis and lower blood pressure, watermelon can be considered a good doctor among vegetables. The sugars and salts it contains can diurete and eliminate inflammation in the kidney; proteases can convert insoluble proteins into soluble proteins and increase the nutrition of patients with nephritis; it also contains substances that lower blood pressure.

After eating watermelon, the amount of urine will increase significantly, which can reduce the content of bile pigment and make the stool smooth, which has a certain effect on the treatment of jaundice.

Fresh watermelon juice and fresh melon skin can increase skin elasticity, reduce wrinkles and increase shine. Therefore, watermelons not only have good food value, but they are also efficient and economical beauty salons for women. If you want to become glamorous, you don’t want to miss watermelons.

Special Note

Watermelon is a summer fruit, and it should not be eaten in winter. It should follow the law of the season.

Do not eat watermelon just out of the refrigerator.

Precautions

High sugar content of watermelon, diabetics should be cautious.

Watermelon cold, excessive cold stimulation will weaken the normal gastric motility, affect the stomach function. Therefore, people with deficiency of spleen and stomach, indigestion, and gastrointestinal disorders should not eat too much at once, or they will cause a large amount of water to enter the stomach, dilute the gastric juice, cause indigestion, and reduce the resistance of the gastrointestinal tract.

Patients with heart failure or nephritis should not eat more watermelon, so as not to increase the burden on the heart and kidneys and make the disease worse.

Before the summer solstice and after the fall, the infirm should not eat.

Quality and technical requirements

(a) Variety.

Jingxin No. 1, Jingxin No. 2, Jingxin No. 3, and Hangxing No.

(b) site conditions.

Sand soil without heavy metal pollution, pH 6.0 to 8.5, organic matter content not less than 1.0%.

(c) Cultivation and management.

1.

Grafting watermelon seedlings: selection of gourd rootstocks. The grafted seedlings should have 3 to 4 true leaves when they are out of bed, and the scions are not long; the leaves are dark green, disease-free and pest-resistant; the stem base is stout; the root system is developed.

2.

Soil preparation and fertilization: Organic fertilizer fully decomposed at a rate of no less than 45 tons, N: 300 to 360 kg, P2O5: 190 to 220 kg, K2O: 120 to 180 kg.

3. Colonization: The colonization period was from late March to late April and the density of colonization was 9000 to 12,000 plants per hectare.

4. Water and fertilizer management: When the watermelon fruit grows to the egg size, swell the melon water, and with the water, each potion topdressing N: 60 to 75 kg, K2O: 75 to 110 kg. One week before picking, stop watering.

5. Pruning: three vine pruning, in addition to the main vine, the two sides of the vine to keep the base, in the second or third female flowers to choose to leave a melon.

6. Pollination: Normal open male flowers were selected from 7.30 am to 10.30 am to artificially pollinate female flowers.

(d) Harvesting.

1. Harvest time: From the flowering of the female flower to the ripening of the fruit, an effective accumulated temperature of 700°C to 900°C is required, about 28 to 30 days. When mature, the peel is hard and smooth, showing the inherent skin color of the species, and the navel and the part of the fruit pedicle intrude and shrink.

2. Harvesting technical requirements: When the melon is harvested, the fruit is accompanied by a piece of melon vine; it is forbidden to harvest on rainy days; the high temperature season should be harvested on the evening; the melons should be taken gently during the loading and unloading process.

(five) quality characteristics.

1. Sensory features:

(1) fruit type: medium fruit type, fruit round or tall round;

(2) single melon weight: 4 to 8 kg;

(3) Pericarp: The skin is thin and brittle, the thickness is not more than 1.2 cm, and the skin color is covered with dark green strips on the green bottom;

(4) 瓤 color: pink to pink, bright color;

(5) texture and flavor: Guai crisp sand, sweet and juicy, low fiber content, refreshing.

2. Physical and chemical indicators:

(1) Soluble solids content: the center is not less than 11%; the edge is not less than 8%;

(2) Sugar to acid ratio: 45 to 50;

(3) Lycopene: not less than 3.0 mg/100 g FW;

(4) Vitamin C: not less than 6.0 mg/100 g FW.

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