Watermelon improved fertilizer
1. Precipitation vinegar: After the watermelon vine vine spreads fertilizer between the strains, it can promote the rapid extension of vine vines. The growth of stems and leaves of watermelon and the formation of flowers not only require a large amount of nitrogen fertilizer, but also need phosphorus and potassium fertilizers. Therefore, the top dressing should be mainly organic fertilizer with nutrients, plus appropriate amount of available fertilizer. Topdressing methods are: open cultivation, after the plants dump the tap, open a deep, wide 10 cm wide, 40-50 cm long dressing trenches between the two melon seedlings, apply 35 to 40 kg of fermented cake fat per acre, Diammonium Phosphate granular fertilizer 10~15 kg, after the application is buried well with soil; mulching film cultivation, can be applied when the melon spread to 20 ~ 30 PCT, in order not to destroy the film, fertilizer can be raised on the side of the film , 20 cm from the base of the plant to open a wide, deep 10 cm of the groove, after the application of the seal groove on the solid, and then cover the film, the types and amount of fertilization with open field cultivation.
2. Swelling melon fertilizer; watermelon sitting on the melon, that is into the expansion of the melon period, this time is the watermelon needs a maximum amount of fat in a lifetime, during this period, top dressing can promote the rapid expansion of the fruit, called swelling melon. Generally divided into two topdressing, phosphorus, potash fertilizer, with the application of nitrogen fertilizer. When the size of the first top-dressing fertilizer is in the baby's egg size, mu is applied to 20~25 kg of compound fertilizer, 5~6 kg of urea, or 15~20 kg of diammonium phosphate and 15 kg of potassium sulfate; Application of diammonium phosphate 5 ~ 7.5 kg. Potassium sulfate 2 to 3 kg. The result was that the fruit pods had been ridged and ridged, and it was easy to damage the stems and leaves by furrowing or opening a hole to fertilize. It is advisable to fertilize water immediately after spraying or spreading.
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