First, cover rain Rain-covered cultivation is a necessary measure for the characteristics of small watermelon peels that are easily cracked. For some species with strong peel and unbreakable fruit, such as black beauty, they can be cultivated in open field. Second, the soil fertigation Deepening the land can deepen the plough layer, improve soil physical properties, and improve the growth environment. In combination with cultivating basal fertilization, basal fertilizer is mainly composed of fully composted compost, and with appropriate amount of fertilizer, it is better to be able to use some cake fertilizers. Due to the difference in absorption and utilization of various fertilizers, generally 10 kg of pure nitrogen, 13 kg of phosphorus, and 10 kg of potassium are applied per acre. The absorption of nutrients in the seedling stage of watermelon is very small, and the amount of fertilizers absorbed during the fruit enlargement period increases rapidly. After applying the base fertilizer, top dressing should be performed. Top dressings account for 30% to 40% of all fertilizers. Third, watermelon Application of watermelon can make the seedling period 1 day ahead of time, the emergence rate increased by 10%, the rate of guarana increased by 7% to 10%, the increase of 6.5% to 21%, sweetening 0.69 degrees. Application method: First, use 300 to 500 times the watermelon seed soaked for 12 hours; the second is to use 200 to 300 times watermelon melon in the watermelon seedling stage, sitting period and the expansion of the leaf stage spray, seedling spraying per acre 40 kilograms, 50 to 75 kilograms per acre, during the period of melonage and expansion. Fourth, sparsely planted Small watermelons are suitable for sparse planting, leaving multiple vines and multiple melons. The promotion of small watermelon in the initial stage of multi-climbing cultivation, greenhouse span of 4 to 4.5 meters, divided into 2 sorghum, the average spacing of 2 to 2.5 meters, spacing of 33 to 50 cm. About 600 per acre seedlings, light pruning or not pruning. With the improvement of cultivation techniques, the planting density tends to become smaller, 400 to 500 plants per mu should be planted, and the method of pruning should be changed to multi-vine (4 to 5 vines) pruning, ie, the number of plants should be reduced and the number of plants per plant increased. . Fifth, control the apprentice If watermelon appears to be long at the seedling stage, 15% paclobutrazol can be used to spray 15 to 20 ppm; when the watermelon vine grows to 50 to 60 cm, spraying 15% paclobutrazol 200 to 300 ppm solution can inhibit the growth of melon vines and lateral vines. Prevention of procreation, increase planting density, and increase yields; 1% of superphosphate calcium leachate can be used during the growing period of watermelon, sprayed 1-2 times to control leggy. Six, scientific pruning There are two kinds of small watermelon pruning methods: First, At the 6th leaf stage, the main vines were picked up and the vines were left to retain 3 to 5 closely-growing vines so that they were grown in parallel. The remaining vinelets and the vines formed on the former cranberry were removed. This pruning method was eliminated. The apical dominance, the retention of several sub-vines is relatively balanced, and the female flowering parts are similar, and it is expected to blossom at the same time and result in a neat fruit shape. The second is to retain the main vines and keep 2 to 3 vines at the base to form 3 vines or 4 vine prunings. The removal of the remaining vines and the occurrence of Sun vines before sitting on the guava leaves this culm to maintain the top dominance. The main vine flower appears early, and it is expected that the fruit will grow in advance. However, this pruning method affects the growth and fruiting of the vine, the variability of the nectarine, affects the product rate of the product, and increases the difficulty of cultivation and management, which may cause Partly split melon.
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