Summer and autumn for watermelon, especially small watermelon, excellent quality, high price, good efficiency, broad market prospects. The relevant practical experience is summarized below. Variety selection Summer and autumn watermelon varieties must be able to withstand high temperatures and rain, and the performance of stable fruit set in high temperature conditions, in the smaller temperature difference between day and night can have a higher sugar content. Better varieties: Black Beauty, Xiaoling, Liling, Xiaolan, Diana. It was determined that the sowing date should be planted in mid-May and that after the rainy season, it should be harvested and harvested before the typhoon approached. Seeding in this period is more suitable for cultivation in open field, with less risk and lower cost. In late June-early July, the early stage of sowing is not affected by the rain, but it is vulnerable to the typhoon in August and should be planted with shelter facilities. This period can be listed in mid-September, melon market is better. Soil preparation should not be used as much as possible. In order to use the former crop for continuous cropping in the West Melon, it is imperative to sprinkling it with 500-fold solution of formaldehyde immediately after harvesting of the previous season crop to disinfect the soil. In addition, soil pH is too low to cause wilting. Therefore, the acid-heavy field can be sprinkled with lime in the saggers. Summer and autumn for watermelon growth period is short, the soil and fertilizer requirements are high, the general basal fertilizer to organic fertilizer is mainly applied per acre 500 kg of organic fertilizer, 40 kg of potassium sulfate compound fertilizer, 30 kg of superphosphate, 0.5 kg of borax. Seeding seeds were soaked in 55 degree warm water and stirred until the temperature dropped to room temperature. Soaking for 4 hours to 6 hours, germination in a 30-degree environment, general germination for 24 hours, and when the seeds were ready for sowing, the sterilizing water was used to plant the planting holes. Drench the seeds, then place the seeds that have been dewy in the irregular planting holes and notice that the buds head downwards. Generally, one germinated hole is placed with one unfertilized seed and two seeds are placed. After sowing, a layer of fine soil is applied, and then the cover soil is sprayed with a sprayer to make it closely contact with the seed. Sowing should be done in the evening or on cloudy days so that the seeds can germinate in a short time, avoiding sun exposure and dehydrating dead seedlings. Field management and planting: Planting width (evening ditch) 2.8 meters, planting 15 rows per plant, planting 400 plants per acre at a plant spacing of 0.5 meters - 540 plants, fertilizing: applying live tree fertilizer one week after planting, mainly nitrogen fertilizer, Promote the occurrence of side vines, mainly to planting acupuncture points. One week after live, a compound fertilizer is applied to promote vine growth. When squashing, such as the size of an egg, it can be applied into the swelled melon, and it can be combined with field irrigation to apply the sulcus. In the late stage of melon development, when the temperature is too high and the plant growth is slow and there is a phenomenon of premature aging, nutrient solution fertilizer or potassium dihydrogen phosphate can be used for spraying. Pruning: The vines that occur before sitting in the cucurbit must be removed. Pruning: The vines that occur before sitting in the guava can grow and grow as nutrients. The pruning is dominated by the main branch of three or four vines, small watermelons leave 3 to 4 per plant, medium melons 1 to 2 or 2. Artificial pollination requires artificial pollination in order to increase fruit setting rate. The small watermelon matures about 25 days after pollination, and the medium watermelon matures about 28 days after pollination. Pest control Pest control with the average spring for watermelon, but the summer and autumn as a positive high temperature and rainy season, anthrax serious incidence, it is advisable to adopt the principle of prevention and control into the fruit setting period after the weekly use of chemical control once, every continuous rainstorm should be every time After spraying treatment.
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