How to regenerate watermelon
The reaping cultivation of watermelon vines is after the first pods are harvested, the old vines are cut off, and immediately watered and fertilized, so that the underlying buds of the watermelon plants are re-emerged and the new shoots are cultivated. The regeneration of watermelon vines does not require seeds, eliminating the need for seedlings, low planting costs, greatly improved yields and benefits, and has important promotional value. In the management should take the following tips: First, management skills before cutting vines 1, replanting base fertilizer regeneration cultivation should be selected soil fertility, irrigation and drainage convenient land. The amount of organic fertilizer used in basal fertilizer is 50% more than that of normal cultivation, and it is also necessary to pay attention to long-term and quick-acting fertilizers in combination with application. In general, 6000-8000 kg of high-quality fertilizer is applied per mu, 25 kg of potassium sulfate or 150 kg of three-element compound fertilizer. With layered fertilization, after the ditching, the circulatory fertilizer is applied to the bottom of the ditch, and fertilizer is applied afterwards. Note that the soil and fertilizer are mixed and the fertilizer should be applied in a 15 cm deep soil layer. 2, choose the appropriate varieties must choose strong growth, branching, fruit set, strong resistance to disease, good quality and medium-maturing varieties. 3, determine the appropriate sowing period of high temperature and rainy July and August, is a serious period of viral disease, but also the locusts, red spiders occur during the period, the watermelon growth is very unfavorable. Therefore, the sowing period for regenerated cultivation should be as early as possible. It is usually planted in early March, planted in early April and harvested in the middle of June. Second, the cranberry regeneration techniques 1, cutting cranberry reproduction time in June higher temperatures, sufficient sunshine, less rainfall, suitable for watermelon growth and development, this time after the new vines germinate quickly, grow well, easy to succeed. If the vine is late, in the event of high temperature and rain or high temperature and dry weather, the new branch is vulnerable to pests and diseases (especially due to virus diseases and locusts), causing new branches to grow weak, difficult to set fruit, and low yield. The best cutting time is generally in mid-late June, and the latest is not later than in early July. 2, cut vine regeneration method After the first harvest melon, the base left 10 centimeters old vines, the rest were cut off. The cut stems and leaves, together with the weeds, were all cleared out of the melon field and immediately watered and fertilized. After 3 days to 5 days, the latent buds at the base will sprout new shoots. Third, after cutting the management of the vine, a reasonable pruning pressure vines after vines selected from the new branches selected to retain three robust growth, pest-free seedlings, and the remaining cut off. When the new branch grows to 40 centimeters to 50 centimeters, it is crushed. The pruning method is the same as conventional cultivation. Pressing vines using pressure, you can use vines to suppress the vine, or use branches to avoid clamping vines. Choose to stay strong guaranty fruit set. After fruiting, in order to promote rapid fruit enlargement, the vines should be sharpened after fruiting. 2. Strengthen the management of fertilizer and water After the watermelon is cut, immediately apply fertilizer and water, prompting it to sprout new branches quickly. Top dressing is mainly nitrogen fertilizer, topdressing urea 10kg-15kg per acre. The new branch produced about 10 days, and then chase once again fertilizer, 10 kg of urea per acre; into the flowering period, spraying 0.3% of potassium dihydrogen phosphate, spraying once every 5 days; about 7 days after fruit set, the young melon eggs When you want to immediately swell the melon fertilizer, apply 10 kg of urea and 9 kg of potassium sulfate per mu, or 25 kg of ternary compound fertilizer. Afterwards watering is appropriate depending on the weather (if the weather is dry, water is poured every 3 days - 5 days). About 25 days after fruit set, the fruit enters mature stage and should be less watered to increase the sugar content of watermelon. 3, do a good job of pest control rehabilitative cultivation before and after fruit set, is in a high temperature and rainy season, a variety of pests and diseases can easily occur and spread, should strengthen prevention and treatment. Diseases to control anthrax, virus disease, disease and powdery mildew; pest control aphids, Spodoptera litura, red spider, etc., to achieve early detection and prevention. Pay attention to alternate rotation, reasonable use of a variety of efficient and low-toxic sterilization, insecticides, and constantly improve the spraying technology to improve the control effect. The main anti-drugs are: Sterilization Wang, Wei Li Shi, thiophanate-methyl, agricultural anti-120, Ruijinte. 4, timely harvested watermelon regenerated cultivation generally late July to early August flowering fruit set, mature in mid-September. Thin, easy to crack, mature varieties require less stringent varieties to be properly picked early, generally eight mature can be harvested; skin thicker, more stringent requirements of maturity, 90% to full harvest, to ensure that the watermelon Yield and quality.