According to a survey conducted by the Ministry of Agriculture, the phenomenon of blindly applying nitrogenous fertilizer in the production of open cabbage in the country is serious. The amount of potash fertilizer is insufficient, and the phenomenon of “heavy heavy elements and light and medium-sized elements†is widespread.
Principles of fertilization: (1) Organic manure is applied in conjunction with chemical fertilizers. Nitrogen, phosphorus, and potassium fertilizers should be applied according to the principles of nitrogen control, phosphorus stabilization, and potassium increase; (2) Fertilizers should be distributed on the basis of top-up and recovery, and top-dressing should be dominated by nitrogen fertilizers. With potassium fertilizer; (3) Note that in the rosette period to the late ball stage appropriate spraying of calcium, boron and other trace elements to prevent "dry heartburn"; (4) acidified land use lime and other acidic soil conditioner; (5) and High-yielding cultivation techniques, especially water-saving irrigation techniques, improve fertilizer utilization.
Fertilization Suggestions: (1) Base fertilizer is applied once to two farms per mu with high quality farmhouse fertilizer. (2) More than 6500 kg per mu yield: 18-20 kg of nitrogen fertilizer (per acre, pure, the same below), 8-10 kg of phosphate fertilizer, and 12-14 kg of potassium fertilizer. (3) The yield level of 5,500-6,500 kilograms per mu: 15-18 kilograms of nitrogen fertilizer, 6-8 kilograms of phosphate fertilizer, and 10-12 kilograms of potash fertilizer. (4) The yield per mu is 4500-5500 kg: 13-15 kg of nitrogen fertilizer, 4-6 kg of phosphate fertilizer, and 8-10 kg of potassium fertilizer.
For the “gravity burned†serious lands in previous years, pay attention to nitrogen control and calcium supplementation, and apply 0.3%-0.5% CaCl2 solution or calcium nitrate solution from the rosette stage to the later stage of the ball 2-3 times; When the garden soil pH is less than 5, 100-150 kg of quick lime should be applied per acre; when the soil pH is less than 4.5, lime (applicable before site preparation) should be applied to 150-200 kg per acre. For boron-depleted plots, 0.5-1 kg of borax can be applied or 2-3 shots of 0.2%-0.3% borax can be sprayed on the leaves. At the same time, 0.5% potassium dihydrogen phosphate may be sprayed for 2-3 times in combination with spraying to increase the net rate and commodity rate of cabbage.
Nitrogen and potassium fertilizer 30% -40% of the basic facilities, 60% -70% in the rosette stage and the early stage of the ball twice in the first application, phosphate fertilizer all as base fertilizer application or acupoint.
Compacted Oxygen Cylinder Filling System
Compacted Oxygen Cylinder Filling System
ETR oxygen cylinder filling system is consisted of the air compressor, air-water separation device, refrigerated air dryer, air dew point monitoring device, multi-stage filter, air buffer tank, air moisture monitoring device, Oxygen Generator, oxygen buffer tank, flow meter, online oxygen monitoring device, oxygen booster and cylinder filling station, smart electric control cabinet, computer monitoring system, remote network monitoring system..
For the compacted oxygen cylinder filling system, all the parts can be compacted together and skid mounted. So it is easy for the installation and operation and maintenance.
Compacted Oxygen Cylinder Filling System,Oxygen Filling Plant,Oxygen Filling Station ,Oxygen Filling Machine
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