Summer watermelon in the whole growth period in the heat and drought stress, how to grow watermelon sweeter? Conventional cultivation often has low yield and no quality guarantee. Therefore, advanced materials and innovative cultivation techniques must be adopted to achieve high yield and quality.
1. The selection of suitable varieties has a great influence on the quality and yield of summer watermelon. Cultivation practices show that early and medium-maturing black seeds with seed and seedless watermelon are more suitable for summer cultivation, of which the black beauty has the best performance. The varieties of green flower skins like Bao are not suitable for cultivation of summer watermelons, because the high temperatures in the summer will make the watermelon skin pale and the color is not fresh. In particular, the watermelon varieties such as extra large red treasures are also easily deformed.
2. Seedlings with strong Zanthoxylum inoculation seedlings of summer watermelon are not strict with autumn watermelons. They can be planted from mid-May to early June. The seedling age is about 15 days. One month before planting, 250 kg of nutrient soil should be prepared for each mu of field. For each 100 kg of dry nutrient soil, add 0.25 kg of Zanthoxylum bungeanum to cultivate strong seedlings. Soaking 8 hours after germination, budding after sowing in plastic nutrient soil filled with plastic nutrition (specification: 7 cm 7 cm), shade insulation, two days after emergence.
3. The nitrogen-enhanced cover film protects the growth period of summer watermelon. It should be used as a fertilizer for early soil preparation, with a width of 1 meter and a width of 30 cm. Fertilization is dominated by organic fertilizers and supplemented by chemical fertilizers. Due to the high temperature and drought in summer, the loss of nitrogen fertilizers is relatively large. The amount of nitrogen fertilizer should be increased appropriately. More than 2,500 kg of stubble fertilizer should be used in Mushi, 50 kg of rapeseed cake and 50 kg of 45% potassium sulfate compound fertilizer. Urea 10 kg. Fertilizer should be applied to the middle of the earthworm (the width of the plastic film cover is wide and the width of the fertilizer should be scattered).
4. Shading, sunscreen cooling and transplanting before the first time to send the grafting drug, before planting seedlings per acre 600~700 plants calculated a good spacing, each film is planted on two lines, on the film (from the film edge 20 cm) punching planting After the seedlings were planted, 0.3 cm thick straw was placed on the mulching film and a bamboo shed of two meters long was used as a shed to cover the sun shade net with a 55% shading rate.
5. Timely twigs and vines. Summer temperatures are high. The melon seedlings grow slowly in the early stages. What are the reasons for the pruning of watermelon dead trees? It should not be too early. It should be started only after the seedlings reach a length of 50 cm. Take three vine pruning, Guamiao left and right staggered vines to make it evenly distributed. When the seedlings are about 70 centimeters long, 25 centimeters away from the mulch, the ploughs are used to open the vines and stretch the vine. Mushi 45% potassium sulfate compound fertilizer 10 kilograms, urea 10 kilograms, and potash 5 kilograms. Covered with rice straw.
6. Strengthen the late management of soil drying when irrigation "running horse water". Summer high temperature, pollen easy dry, should be artificial pollination in the morning 6 to 8 hours. When the watermelon eggs are large, spray 0.2%~0.3% potassium dihydrogen phosphate once every 3 days and spray 3 times. Pay attention to fruit thinning and ensure 1 strain of 1 melon. The occurrence of summer watermelon pests is more serious. The pests are melon grasshoppers, Spodoptera littoralis, aphids, etc., and they can be used to prevent and control pesticides such as abamectin alternately. Summer temperature is high, summer watermelon can generally mature after 28 days.
Denture Box Serries,Denture Storage,Denture Storage Case,Denture Cases Boxes
Ningbo Carest Medical Instrument Co.,ltd , https://www.carestmed.com