Cultivators, by watermelon, are more widely grown in the country. In recent years, the production of watermelons in facilities has been improving rapidly because of their early maturity, productivity and efficiency. However, watermelons are prone to slow growth, poor guerilla fracturing and high incidences of disease, as well as reduced planting efficiency, owing to, inter alia, poor winter weather. In response, the newspaper nord vegetables, in particular, designed a special presentation on “concerning the management of watermelon cultivation in facilities”, which was analysed in terms of temperature conservation, growing trees and disease prevention and treatment。
In winter, low-temperature oligarchy and rain and snow weather became “treadstones” in the production of watermelons in sheds, advising vegetable farmers to regulate the environment, lay the basis for the planting season, and promote melons in the water。
Warming of the shed: making the watermelon comfortable
Watermelon is a hot crop, with watermelon grown during the winter, and the temperature management of sheds is a top priority. For example, the creation of “treasure sheds” in which a relatively closed space is used, such as film, wire and so forth, is best served by the use of wires to raise the middle of the treasure and form “caps” structures, which can contribute significantly to the temperature of the sheds. Lower temperatures at the entrance and front of the sheds, which require special attention to keep warm, suggest that vegetable farmers set up small compartments at the entrance and small arches on the front face, thereby raising the temperature and ensuring consistency in the growth of watermelons。
In addition to the setting up of “shelter sheds”, early heating of the sheds is necessary before cold currents and cooling weather arrives, such as burning of hot blocks, which can burn for 2. 5 hours in a continuous manner, with no light, and safe use, which can rapidly increase night temperature above 4°c and be accompanied by light-lighting lights, re-reflection film, increased light intensity, increased speed of light co-operation in the leaves, and increased heat. Conditional sheds can also be equipped with heating stoves to rapidly increase temperature inside the shed. Through a combination of measures, effective improvements in the light and temperature conditions of the plant are facilitated by its robust growth。
The focus is normally on leaf sprayed calcium, crustaceans, white sugar, increasing cell activity and increasing the resilience of plants. It is also possible to spray early on anti-freezing agents, which are known to provide special protection for plants under cold weather conditions and to make them more responsive to low temperature conditions. The application of anti-freezing agents increases the concentration of cell fluids and enhances membrane stability, thereby increasing the resistance of plants to low temperatures。
Rational watering: increasing temperature and slowing down
Cultivation of watermelons during the cold seasons is also key to management, as is how to avoid the establishment of low post-plant temperatures and promote seedlings. In order to avoid sub-temperatures, attention should be paid to watering the effects of the temperature, based on good temperature protection. It is recommended that the water be not too heavy, that it be pre-planted to increase the temperature, and that it not be or less so. A week before a watermelon is planted, using the weather so that it is fertilized in advance, with a pick-up, and then a large amount of water is poured into the shed and warmed for four or five days, before it becomes ready for proper humidity and rising temperatures。
When the seedling is slow, care is taken to properly control the fatty water. A watermelon is not generally required to catch fat because of its greater use. Water should be watered, as appropriate, on the basis of the size of the seedling, soil conditions and weather conditions, and in the form of underwater water. “the watermelon likes to be fat and fat, and it grows fast.” in fact, the watermelon tends to grow when it comes to the supply of heavy water and fat, and in general it is only possible to control the amount and frequency of water。
Whole chicken branch: let the watermelon grow
In the management of the watermelon, there were too many side chickens left by the vegetable farmers, affecting the watermelon. In fact, the whole branch of the chicken can only be reduced if it is adapted to the watermelon's characteristics, so as to regulate the growth of the plant, rationalize the distribution of the leaves, reduce unnecessary nutrient consumption and increase ventilation. In this regard, it is recommended that the surplus chickens be removed in a timely manner and that, in general, each of them be kept with a master cranberry and that the two sides be supported with support. If the watermelon stays in the second place, it'll be on the side cranberry。
The watermelon is to be sewn in accordance with the size of the plant. The vegetable farmers do not notice that the whole branch is overweight, which affects the accumulation of photocos and hence the growth of the melon. Since the growth of the plant after the smelt tends to slow down, the nutrients are growing more abundantly and the phenomenon is no longer prevalent. The whole branch should be careful to remove, at an early stage, the sprouts of the sprouts, except for the preservation of the sprouts, so that the sprouts are protected against unprovoked nutrient consumption, and so that the sprouts of the sprouts are healed quickly, the infection rate is reduced and the result is properly grown。
A little watermelon with a chicken is important. Small water meguado uses the double-cranium cultivation model, which preserves the main chicken and a strong chicken in the base. A strong chicken is usually left on the main chicken section 3-5, with the rest removed. When the watermelon is growing up to about 30 to 40 cm, it is sufficient to make the chicken in time. The whole foliage of the chickens is large and large, as are the female, and the chickens on the main side are able to sit on melons, with a high rate of melons, and also to facilitate their formation。
Fragmentation: managing the timing
The appropriate temperature required for the flowering of a watermelon is 30°c-32°c during the day, preferably not less than 14°c at night. When the weather is clear, the temperature in the day shed can be regulated by defiling, venting, etc. In contrast, night temperature protection is relatively limited and, in the event of springfalls or consecutive days, early closure of the wind can lead to low night temperature, which is detrimental to the division of the male. In the case of watermelon, which is mainly artificially pollinated, the number of male flowers is reduced or the quality of the pollination is not effective. As a result, guarantians are required to follow weather forecasts in a timely manner and to close wind vents early in the afternoon, before the onset of cold weather, in order to keep them warm at night。
The watermelon is chronically cold and oligarchy, and it is prone to dystrophy, and even if it is barely left, its head is small because of its low temperature and the small size of its overall luminous leaves. On the other hand, there is a tendency to be too big and thick, so experienced vegetable farmers choose the second or the third female to pollute。
Watermelons are pollinated at 23°c-27°c and air moisture at 70-80%, so pollinators are the most active and pollinating. If you don't have any flowers, you can go to the shed to find the flowers that opened on the day
The pollen shall be carried out in the clear weather from 9 to 10 a. M., at which time the female and male physiological activity is most intense and may be delayed to 11 a. M. At the latest. After noon, the color of the crown fades and begins to close, pollen physiology is reduced and pollinators are susceptible to deformity. In order to ensure the quality of pollination, it is recommended that it be carried out at the same time as the spraying, in order to increase the sitting rate. It should be noted that the concentration of the spray is subject to reasonable adjustment in combination with the concentration of the agent and the temperature of the shed, and that when used, it is applied on both sides of the melon, evenly. It is recommended that pollination be completed within one week to ensure that the watermelon is properly prepared and listed simultaneously。
Boron, which promotes the construction and development of reproductive organs. When the boron supply is sufficient, the buds are well divided and pollen is sufficient. The calcium stabilizes the cell wall and inhibits the permeability of the substance in the tissue. The watermelon is an accumulator crop that supplements, in a timely manner before and after the flowering of the watermelon, the micronutrient fertilizers of calcium, boron, etc., both to optimize the separation of the buds and to ensure the resilience of the melon, the skin and the trachea, and to reduce the occurrence of cracks and cracks。
It is recommended that micro-elemental foliage be sprayed during 7 or 8 leaves of the watermelon, and that 12 or 13 leaves be sprayed for the second time, so as to promote the chromatization of flowers, and that timely resupply of micro-elements such as calcium and boron also increase the resilience of the plant, ensuring that the watermelon blooms early and is large。
Subsistence: ensuring adequate nutrition of watermelons
The high yield of watermelons is not dependent on sufficient nutrients. The data show that for each 1000 kg of watermelon produced, the requirement is 2. 5 kg-3. 2 kg of pure nitrogen, 0. 8 kg-1. 2 kg of pure phosphorus, 2. 9 kg-3. 6 kg of pure potassium, and the ratio of demand for potassium nitrogen phosphorus is approximately 3. 1:3. 5:4. 0. It is recommended that watermelon be pollinated 11-12 days after the application of 6-7 kg/acre of balanced water solution and 10-12 kg/acre of high potassium solution when the watermelon begins to expand. In the case of springtime days, care is also taken to supplement the leaves with full-nutrient foliage with functional fertilizers such as crustaceans and amino acids, so as to reduce the nutritional deficiency of the plant and ensure its normal growth。
In addition, day-to-day emphasis should be placed on the application of microbacterial agents and functional fertilizers with high organic content, which can supplement organic active substances such as amino acids and nucleotides, as well as useful microorganisms, the activation of soil and the enhancement of the absorptive capacity of root systems, thereby improving the quality of watermelon. Tests indicate that in sheds with high organic content, the soluble sugar content of the watermelon matured up to 34. 10 per cent for marginal sugar and 39. 16 per cent for cardiac sugar, compared to that of unused organic fertilizers。
The north vegetables reporter, ko shihua
