How are watermelons on sale in April grown in the market? What are the points for attention?

Watermelon can be said to be a necessary fruit in summer. In recent years, there have been more and more anti-seasonal fruits. The reason is that people gradually understand that if commodities can enter the market ahead of time, they can quickly occupy the market and thus obtain greater economic benefits. Watermelon is also the same, with the continuous development of planting technology, some areas can eat watermelon on the market around April, then, watermelon early listing technology is how to achieve it? Let's find out together.

1. Seed selection required for watermelon listing in advance

Watermelon seed selection work needs to pay attention to two points: one is the adaptability of watermelon to the climate of planting area; the other is the market sales situation of watermelon planted. With regard to climate adaptability, growers can choose suitable melon seedlings according to local climatic conditions. Regarding market adaptability, there are two main melon shapes on the market at present, one is seedless watermelon and the other is seedless watermelon. Planting experience tells us that seedless watermelon can achieve early maturity through a series of planting techniques, and the maturity period of seedless watermelon is relatively long. Growers can choose to plant seedless watermelon and seedless watermelon in two melon shapes, preferably in a ratio of four to six. Using these two physical techniques to control pests can effectively eliminate most of the pests that seriously harm the growth of melon seedlings, such as moths and flies. Seed-bearing watermelon can be used by farmers and merchants to go on the market in advance and occupy the market, while seedless watermelon can be supplemented later to consolidate the market. The combination of the two can complement each other, which is not only beneficial to growers and merchants to obtain considerable economic benefits, but also to meet the needs of consumers. At present, there are varieties of black beauty series with good planting effect in the field of seedless watermelon, and Nongyouxin No.1, etc., which can be reasonably selected by farmers.

2. Reasonable and timely sowing

To make watermelon market ahead of time, it is very important to choose the right sowing time, and it is essential to adopt scientific and reasonable sowing methods. Timely sowing needs to consider local climatic conditions, temperature and other factors. Take the author's location as an example: the average temperature in winter and spring is 14 degrees Celsius, and after March, the temperature gradually rises. Growers can sow seedlings in greenhouses during December and January of the next year, and farmers can transplant cultivated watermelon seedlings to greenhouses in fields at the end of January and early February of the next year. The following matters need to be paid attention to in the work of sowing seedlings: First, the seeds must be disinfected before sowing, and the work of preventing diseases must be done well; Second, after the seeds sprout, it is necessary to ensure the abundance of water and nutrients at the roots; Third, it is necessary to artificially strengthen the intensity of light.

3. Heat preservation cultivation of field management

In order to make watermelon market ahead of time, only early sowing seedlings, that is, in winter around December need to start sowing seedlings. By adopting the two physical technologies for pest control, most pests seriously endangering the growth of watermelon seedlings can be effectively eliminated, such as moths and flies and aphids, etc. The climate in December in winter is relatively cold, and only by ensuring proper temperature can watermelon seeding and seedling work be carried out normally. The initial stage of sowing seedlings is more strict with temperature requirements, so this stage is carried out in greenhouses, and watermelon seedlings are transplanted into greenhouses in the field after about a month. In short, in order to make watermelon listed ahead of time, temperature is the key in the process of watermelon planting, so the planting method in the greenhouse is the main means.

4. Field management between seedlings, reasonable dense planting

When watermelon seedlings grow to a certain stage in greenhouse, they will be entangled with each other, because the density of watermelon seedlings in some areas is too high, so it is necessary to thin seedlings in field. Too high seedling density will seriously affect the normal growth of watermelon seedlings, which is not conducive to the early listing of watermelon. However, if the seedling density is too low and too sparse, it will directly affect the yield of watermelon. Therefore, growers must reasonably plan the number of melon seedlings per unit area of their melon fields according to the actual situation of their melon fields, reasonably plant them closely, and carry out the work of thinning seedlings in the fields in time.

5. Irrigation techniques for field management

Watermelon planting process is very draught, so to ensure adequate water, active irrigation, in order to ensure that watermelon ahead of schedule. Watermelon field irrigation management should adhere to the principle of "more frequency, less dosage", such irrigation methods are more beneficial to the growth of watermelon. The irrigation technology that accords with this principle is the drip irrigation technology under film that is widely used now. This irrigation technique not only ensures abundant water in watermelon fields through all-weather spraying, but also saves water.

6. Pest control in field management

Watermelon planting process in order to achieve watermelon market ahead of time to ensure that watermelon normal growth, from the impact of pests. Pesticide use is one way, but with the development of science and technology, we can minimize the use of pesticides by planting watermelons today. After all, pesticide use has too many dominant and hidden negative effects. Farmers can control pests by using physical techniques such as frequency-vibrating insecticidal lamps and insect traps. In greenhouses in the field, an average of three to four square meters is installed with a frequency vibration type insecticide lamp, and three to four insect attracting yellow plates with an area of 20 cm by 40 cm coated with oil are hung every 100 square meters. Using these two physical techniques to control pests can effectively eliminate most of the pests that seriously harm the growth of melon seedlings, such as moths and flies. Moreover, the economic input of the frequency-vibrating insecticidal lamp and the insect attracting yellow plate is disposable, can be used for a long time, and can effectively reduce the planting cost of growers. In addition, the use of physical technology does not have a series of negative effects of pesticide use, not only has good pest control effect, but also can ensure the excellent quality of watermelon and improve the safety quality of watermelon.