Bungee cord,or sometimes we call it elastic straps,elastic ropes,shock cord,octopus strap,etc,is a practical tool which helps people to secure light duty loads or to absorb shock.
It is an elastic cord composed of one or more elastic strands forming a core,usually equipped metal or plastic Hooks on each end.
Owing to the small hooks and its elasticity,bungee cord are widely used to secure objects without tying knots.
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2. Expanded melon fertilizer; after sitting on the melon, the watermelon enters the period of expanding melon. At this time, it is the period of maximum fertilizer requirement in the whole life of watermelon. In this period, topdressing can promote the rapid expansion of the fruit, which is called the expanded melon. Generally divided into two topdressing, mainly phosphorus and potassium fertilizer, combined with the application of nitrogen fertilizer. When the first top dressing is in the size of the young melon egg, 20~25 kg of compound fertilizer, 5~6 kg of urea, or 15~20 kg of diammonium phosphate and 15 kg of potassium sulfate; the second time in the size of the melon bowl, the mu Apply diammonium phosphate 5~7.5 kg. Potassium sulfate 2~3 kg. As a result, the melons have been sealed, and it is easy to damage the stems and leaves by ditching or opening a hole. Fertilization should be carried out immediately after water application or spraying. 
Watermelon seed dressing technology
1. 蔓 蔓 fertilizer: After the watermelon vines, the topdressing between the plants can promote the rapid elongation of the vines. The growth of watermelon stems and leaves and the formation of flowers not only require a large amount of nitrogen fertilizer, but also phosphorus and potassium fertilizers. Therefore, this topdressing should be based on nutrient-complete organic fertilizer, plus an appropriate amount of quick-acting fertilizer. The method of chasing is: open field cultivation, after planting the faucet, open a topdressing ditch with a depth of 10 cm and a length of 40 to 50 cm in the middle of the two melon seedlings, and apply 35-40 kg of fermented cake fertilizer per acre. Diammonium phosphate granule fertilizer 10~15 kg, buried with soil after application; mulching cultivation, can be applied when the vine grows to 20~30 PCT, in order to not damage the mulch, the film can be lifted up when topdressing At a distance of 20 cm from the base of the plant, a groove of 10 cm wide and 10 cm deep is opened. After the application, the ditch is stepped on, and the mulch is covered. The type and amount of fertilization are cultivated in the open field.
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