Why do fertilizers need to be reduced? We have done a survey in Jiangsu. 50% of the farmers use excessive nitrogen fertilizer, 33% of the farmers with reasonable nitrogen fertilizer, and 17% of the nitrogen fertilizer. Losing weight is a very macro concept. Not every land, every farmer, or every crop should lose weight, but the total amount should be reduced. It is necessary to determine how to reduce according to the specific conditions of crops and soil. At present, the input of nitrogen fertilizer in farmland is about twice as much as that of crops. The total amount is indeed super, but the difference between different regions is very large. It may be excessive in this place, but not in other areas. Excessive application of nitrogen fertilizer can cause crop lodging, increase of pests and diseases, and decline in the quality of agricultural products, so it is definitely not good to lose weight.
But how can we achieve weight loss without reducing production? This requires the use of nutrient resources from various sources, control of the total amount, saving fertilizer; phased fertilization, the use of limited fertilizers when crops are most needed. In the 1980s, 10 kilograms of nitrogen fertilizer was applied to an acre of land. At that time, there were 2 kilograms of nitrogen in the soil, and 1 kilogram of environmental nitrogen (atmosphere + water) was 13 kilograms. At present, 30 kilograms of nitrogen fertilizer per acre is applied, and 13 residues remain in the soil. In kilograms, there are 6 kilograms in the atmosphere and water body, which add up to 49 kilograms. The crops need to be 20 kilograms to 30 kilograms at most, and 49 kilograms is not much more? Therefore, after deducting 19 kg of nutrients from the soil and the environment, reducing fertilization by 20% will have no effect. Because we have fertilized a lot in the past 20 years, there is a lot of residue in the soil, there are nutrients in the surface water, and there are nutrients in the rain above and below the sky. This is the main principle of our weight loss. We have done a lot of research, you reduce the fertilizer by 20%, not only does not reduce production, but will increase production by 7% to 8%.
The best technology is to lose weight and increase production, and it is a green production and efficiency model. The technical points are: to manage crops to increase production, and to manage nutrients to improve efficiency. We experimented in the wheat field in Shandong, reducing the nitrogen fertilizer in the formula fertilizer by 20%, increasing the potassium and zinc, and the cost was almost no increase, but the output increased by 16%. Therefore, weight loss will not only reduce production, but also significantly increase production, which is more effective on cash crops. We did apple experiment in Luochuan, Shaanxi, and reduced the nitrogen fertilizer by 20%. The result was an increase of 18% and a 40% increase. The effect was very obvious. (Farmers Daily)
Cutting Machine for Rebar Splicing
GQ40/GQ50/GQ60 cutting machine for rebar splicing is an ideal equipment for cutting.
It is a special type cutting machine, the incision cut by this machine is round, flat, no U-shape, suitable for threading directly. So it is a matching machine for Rebar Thread Rolling Machine.
Main Features of Rebar Cutting Machine
1. Incision is rounded, straight, non-angular, flat without angle.
2. Adopt splash lubrication, machine parts are lubricated well, it could continuous work two months after adding gear oil one time.
3. Machine structure is upgraded from double reduction to triple reduction, the shear strength is powerful.
Main Technical Parameter
Model |
GQ40 | GQ50 | GQ60 |
Voltage |
3-380V-50HZ |
3-380V-50HZ |
3-380V-50HZ |
Motor Power |
3.0KW | 4.0KW | 5.5KW |
Motor Speed |
2880r/min | 2880r/min | 2880r/min |
Punching Frequency |
32times/min | 32times/min | 27times/min |
Cutting Nominal Stroke |
34mm | 34mm | 44mm |
Cutting Common Carbon Steel |
≤Φ32mm |
≤Φ40mm |
≤Φ50mm |
Cutting Deformed Bar |
14-28mm | 14-32mm | 16-40mm |
Cutting Max Flat Steel |
70*15mm |
85*16mm |
90*18mm |
Cutting Max Square Steel |
32*32mm | 40*40mm | 50*50mm |
Cutting Max Angle Steel |
50*50mm | 63*63mm | 75*75mm |
Weight(kg) |
430±5 |
530±5 |
800±5 |
Dimension(mm) |
1280*460*720 |
1440*500*740 |
1470*550*875 |
Rebar Cutting Machine
Automatic Rebar Cutting Machine,Steel Bar Cutter Rebar Cutting Machine,Rebar Cutting Machine Steel Sheet Cutter,High Strength Rebar Cutting Machine
BAODING JINDI MACHINERY CO., LTD , https://www.rebarconnector.com