Wire-line core barrel is a drilling tool that retrives core from the drill pipe without lifting the drill. The complete set of drill tools includes: drill assembly, fishing tool, drill pipe, winch, picker, gripper and free clamp. It has the advantages of high drilling efficiency, high core taking rate, long bit life and low labor intensity. As the drilling deepens, the advantage becomes more obvious.
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Key points of tobacco fertilization technology
Tobacco fertilization method is: re-application of base fertilizer, early application of seedling fertilizer, and application of phosphorus and potassium fertilizer. The ratio of nitrogen, phosphorus and potassium in general fertility is 1:1:2, and 10 kg of compound fertilizer can be applied per mu, 10 kg of urea, 50 kg of phosphate fertilizer, 25 kg of potassium sulfate, 1 kg of boron fertilizer, 25 kg of cake fertilizer, and ash 500. --1000 kg.
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