High-yielding Cultivation Techniques of Summer and Autumn Watermelon

Summer and autumn watermelons are planted from the end of May to early June and harvested from August to September. At this time, during the high temperature and rainy season, the plants grow weakly, their stress resistance is poor, the pests and diseases are seriously endangered, and the production is difficult. Therefore, corresponding supporting technical measures must be taken to obtain high quality and high yields. First, choose a good variety of summer and autumn watermelons should be selected for disease resistance, moisture resistance, high temperature, strong growth, strong photosynthetic varieties, such as Xin Cheng 1, No. 2, Zhongqiao No. 1, Black Beauty and so on. Carefully select new varieties such as Xinhongbao and Xidahongbao, which are relatively thin, because they are easily cracked. Second, the selection of land and sorghum planting summer and autumn watermelons should choose high-desert terrain, deep soil, fertility and convenient cultivation of fertile sandy loam soil sorghum planting, melon sorghum more than 30 cm, 2 meters, dig around the trench, in order to facilitate the rapid drain after the rain And make the soil have suitable humidity and good ventilation. Third, nurture strong seedlings, planted in a timely manner using nutritious bag seedlings, the use of high-lying, well-ventilated place to build seedbeds, with nutritious bags first to cultivate good seedlings, seedlings above the bed set up a small arch shelter rain. Cover the grass from 10 a.m. to 3 p.m. on sunny days to prevent sun exposure. Usually, watering should be minimized during the seedling period to prevent leggy seedlings. The cultivation age of the summer and autumn is shorter, and the seedling age is about 15 days. suitable. Fourth, pruning pressure vines Summer and autumn watermelons must be strictly pruned to prevent excessive growth of leaf vines, generally only retain the main vines and a vine, all other vines cut off. When the female flowers are open, if the plants are long and difficult to set fruit, they can sprain the vines before the female flowers in 3-5 leaves. When the cucumbers are sitting, the plants are still growing too profusely, and they can be topping at the 10 leaves of the melon to facilitate the growth of young melons. Inflated. Fifth, fertilizer management Summer and autumn watermelon growth period is short, strong nutrient growth, fruit development is poor, should strengthen the regulation of fertilizer and water. In principle, fertilization should be controlled mainly before flowering and fruit setting, with little or no application. After the young melons are stable, timely application of quick-release compound fertilizers will be conducted. After the roots will be applied once every 5-7 days, with 0.3% urea and 0.2% Potassium dihydrogen phosphate prevents premature aging. Water management should be combined with irrigation and drainage, in addition to meeting the water needed for the growth and development of watermelon, it should also ensure that the soil is rich in oxygen and has good permeability to meet the needs of the root system. Watering should be carried out when the humidity is low in the early morning and early evening. In addition to sorghum and high ridge cultivation, the drainage should also be strengthened with rain protection and flood prevention work. In particular, after the high-temperature showers in summer, drainage should be promptly performed. Sixth, Baohuabao Gua summer watermelon flowering fruiting time is high temperature and rain, pollination and fertilization is extremely difficult, in order to prevent rain, should be female flowers, male flowers were bagged, or pre-pile male flowers to be blooming, so that its indoor opening, Field pollination, if within 3 hours after pollination, rain should be given once. Summer and autumn watermelon fruit development is a time of high temperature and strong light, rain concentrated season, easy to rotten fruit and sunburn phenomenon, should take appropriate protective measures. First of all, make a smooth soil platform with slopes on the land and avoid flooding with excess water. At the same time, when the mouth of the young melons is large, lay a straw pad with a thickness of about 5 cm to prevent contact with ground fruits and infect the disease. And by Huang Shougua larvae attack. Secondly, in order to prevent the sun from being exposed to the sun, it is effective to prevent the onset of sunburn disease by covering the melons with guarana or covering them with leaves and straw during the period from fruit enlargement to fruit ripening.

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