Cultivation Techniques of "One Stork and Overcharge" in Greenhouse Watermelon

The “single and overcharged” of greenhouse watermelon refers to the planting of multiple batches of harvest. It is usually planted in the first half of January, transplanted in the middle and late February, and the first batch of watermelons will be harvested after May 1st. By the end of October, the harvest is over, and the harvesting frequency is often as high as 5-6 times. The cultivation techniques of “single and overcharged” should focus on the long-term coordination of the relationship between rooting, vine protection, leaf protection and melon. The key points for the cultivation of watermelons in greenhouses are as follows:

(1) On the basis of applying the base fertilizer in time to cultivate the matured soil, combined with the winter ploughing, the farmer's fertilizer is 500 kg and the phosphorus and potassium fertilizer is 50 kg. When doing sputum, apply 10-15 kg of compound fertilizer to the acre, and do a good job of the ditch system and the ditch cleaning after the planting, so that the rain can be stopped and the drought can be filled.

(2) The selection of varieties with excellent varieties, disease resistance and strong resistance is the basis for capturing the high yield of greenhouse watermelons. According to the practice, the early good (8424) series is generally good, because the early good is a medium-fruit type, the output is high and the quality is good, so the market is good. At the same time, the use of greenhouses for a long period of time is relatively long, requiring high-quality construction of greenhouses to prevent cold, wind and rain.

(3) Fertilizer and water management After the seedling stage, the watermelon is planted and stretched to the vine. Because of the nutrition and seedlings, the base fertilizer is sufficient. In addition to pouring water, generally no fertilizer is needed. When the main vine grows to 40-50cm, the side vines also begin to grow. At this time, the growth of the plant is accelerated, and the demand for fertilizer and water begins to increase. If the fertilizer is insufficient, the growth is slow, the leaves are small, and the leaves are light, then some light fertilizer water should be applied to promote the growth of the melons. When the melon fruit grows to the size of the egg, the demand for nutrients begins to increase significantly. Therefore, it is necessary to apply the fertilizer. The first and second batch of melons have a long maturity due to the base fertilizer, low temperature and long maturity. When the melons grow to the mouth of the bowl, 15-18 kg of ternary compound fertilizer is applied to the mu, and 200-250 kg of water is added for the application. One week later. Apply again, the amount is the same. Fertilization was stopped 7-10 days before harvesting. Since then, many batches of melons are high in temperature and mature, so the expanded melon fertilizer can be applied at the time of table tennis size, and once again after one week, the number is the same as last time. The amount of topdressing in the whole watermelon growing season is generally 250-300 kg of ternary compound fertilizer. In the hot season in July and August, due to the rapid transpiration of the leaf surface, it is necessary to apply fresh water and fertilizer.

(4) Pruning vines “one squatting and multi-collecting” generally 300-350 strains of western muskmelon seedlings, using three vines. When the side vine grows to 20cm, choose one main vine and two strong side vines. The side vines grown on the main and auxiliary vines are generally selected to stay 1-2, and the rest are completely removed. The main and auxiliary vines generally do not top the top, allowing them to naturally harvest. After the second batch of melons are harvested, the method of guilloche on the base side is generally adopted. Under normal circumstances, due to the application of the expanded melon fertilizer, many side vines will grow at the base. When these side vines grow to about 20 cm, 2-3 strong side vines are selected, and the rest are completely removed. These bases are newly grown with side-grown melons, which are large in size and good in quality. The purpose of Liman is to make the melon vines evenly distributed. The melon seedlings are generally planted 50-70cm away from the central ditch; in the three vines selected, the two vines are outward and one vine is extended inward along the ridge, and the direction is consistent. To prevent the overlapping of melons.

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