How to grow black beauty watermelon cultivation techniques and matters needing attention

Black beauty watermelon is a relatively large watermelon with red color and crisp taste. Although it is not as good as the market response of Qilin melon, it is also welcomed by some people. So planting black beauty has gradually become a channel for people to start a business and get rich, so how on earth is black beauty watermelon grown?

How to grow black beauty watermelon

First, sowing and raising seedlings

1. Preparation of nutritious soil: nutritious cup is used to raise seedlings, which requires 150 kilograms of nutritious soil per mu. The nutritive soil is made of 70% pond mud, 20% rotten organic fertilizer and 10% pure red mud sieve. Each bag weighs about 0 or 5 kilograms, and put 6-7 grains of compound fertilizer in the middle of the nutrition bag. The raw materials for the preparation of nutritious soil should not be used in the soil that has been planted before.

2. Accelerate germination and sow seeds: soak the seeds with 50% carbendazim 500 times solution for 30 minutes, then soak them with clean water for 4 hours, pick up and accelerate germination until 70% of the seeds are white and sow. When sowing, the nutritious soil is first drenched with 500 times the liquid of carbendazim, the seeds are laid flat, the depth is about 1 cm, and the buds are down. After sowing, the seedlings are covered with nylon film to keep the nutritious soil moist. Generally, it can be unearthed 5-7 days after sowing. After unearthed, the cotyledons should be shelled manually to promote cotyledons to unfold as soon as possible.

3. Cultivate strong seedlings: spray the seedlings once every 7-10 days with 50% dimethoate 800 times solution and 50% carbendazim 500 times solution. When the first true leaf grows, it begins to be irrigated with mature human feces and urine 10 times as much as water, every other day. In the early morning of a sunny day, you can lift the film to refine the seedlings and re-cover it in the evening. The value can be set when the seedling grows to 2 or 3 true leaves.

II. Land preparation and planting

1. Land selection and preparation: select sandy land with sufficient sunshine, convenient drainage and irrigation, deep and loose soil layer to build a border for planting, the width of the border is 3 meters, the width of the ditch is 0 or 5 meters, and the border surface is slightly curved. Soil preparation can evenly spread 50 kg of quicklime per mu, which can not only disinfect but also neutralize the acidity of the soil. Per mu, 1000-1500 kg of rotten pig and cow manure, 20-25 kg of superphosphate, 30 kg of compound fertilizer and 10 kg of potassium sulfate were applied as base fertilizer and mixed with the soil.

2. Planting: when the seedlings grow to 2 or 3 true leaves, the distance between plants is 0 or 5 meters, and 330 plants are planted per mu. After transplantation, 50% carbendazim 500 times solution was used as root water. Then spread a film on the border surface on both sides of the seedling, and make the film close to the border surface, compacted without overturning.

Cultivation techniques and matters needing attention of Black Beauty Watermelon

1. Water and fertilizer work

In the early stage of the growth of black beauty watermelon, we should mainly pay attention to the application of nitrogen fertilizer, and there should be a small amount of potassium and phosphate fertilizer, in order to promote the rapid growth of melon vines. In the flowering stage, it is necessary to properly control the reduction of the application of nitrogen fertilizer and increase the application amount of phosphorus fertilizer and potassium fertilizer in order to improve the melon setting rate of the plant. After growing watermelon on the plant, the amount of nitrogen fertilizer should be increased again in order to promote the growth of watermelon quickly. Finally, in the early stage of melon ripening, attention should be paid to increasing the amount of potash fertilizer in order to improve the quality of melons and fruits. In the whole growth cycle of Heimei watermelon, the most suitable compound fertilizer per mu is about 20kg, urea 15kg and calcium phosphate 40kg.

In the whole growth cycle of the black beauty watermelon, we should pay attention to keep the soil moisture sufficient, keep the soil moist when the vine extends, and ensure that the plant growth environment has enough water to absorb after sitting on the melon. However, attention should be paid to Rain Water's discharge work, especially the heavy rainfall caused by typhoons, and watermelons are prohibited from soaking in water during the growth cycle.

2. Branch arrangement work

When the black beauty watermelon begins to walk the vine, it is necessary to carry out heart-picking work, leaving three or four side vines on each main vine, and the retention principle is that the side vines grow healthily. After sitting on the melon, it is necessary to remove some of the fruitless side vines and retain some appropriately, mainly because of ensuring the supply of nutrients needed for the growth of watermelons.

3. Pollination and melon retention

Artificial pollination is generally used in the pollination of black beauty watermelon. in artificial pollination, varieties with similar flowering period should be used as pollination plants. The specific method is that pollination is carried out around 10: 00 noon, and there should be no watering and fertilization in pollination, so as not to affect the setting rate of watermelon. When the female flowers are in full bloom and the stigma mucus is the most, the open male flowers are collected for comprehensive pollination. It is necessary to ensure that the whole stigma is covered with pollen in order to improve the melon setting rate of the plant.

For the problem of retaining the black beauty watermelon, we should first know that the quality of the watermelon formed by the first female flower of the main vine is not very good, the melon is flat, the peel is thick, and it is easy to be hollow, so it should not be retained. In the second and third female flowers of the main vine and the melons with good growth and development of lateral vines, the principle is to observe the development of branches and vines, and watermelons with good development of branches and vines should be retained.

The origin of black beauty

Black beauty watermelons are produced in many places in China, the most famous of which are Nanning, Hainan, Yinchuan, Ningxia and Weinan, Shaanxi.

How to choose watermelon?

1, grain: the surface of the skin is smooth, the pattern is clear, the pattern is obvious, the bottom is yellow is the ripe melon, the surface is fluffy, the luster is dim, the flower spot and the grain is not clear is the unripe melon.

2. Sound: those who hear "bang bang" sound with their fingers are ripe melons, those who hear "Dangdang" sound are not yet ripe, and those who hear "poof" sound are overripe melons.

3, melon stalk: green is ripe melon, dark brown, fluffy, curled and crisp, curled beard tip yellowed and withered are unripe melons, and the stalks have withered into "dead vine melons".

4, head and tail: the ends of the watermelon are symmetrical, the navel and the pedicle are sunken deeply, and the four sides are full of good melons. If the head is big and the tail is small or the head tip and tail is thick, it is the melon of poor quality.

5, weight: compared with the two watermelons, if the variety is the same, the size is the same, the lighter is the more mature melon, on the contrary, it is not mature, and the heavier the melon is, the lower the maturity is.

Due to the wide range of sales of Black Beauty, the area of growing Black Beauty is also gradually expanding, but the most famous places are the old ones. However, in the current market, if you want to choose delicious black beauty watermelon, it is very important to master the selection method.