In traditional corn farming, farmers typically use two shovels, apply two types of fertilizers, and follow various management practices. However, this method is physically demanding and time-consuming, making it difficult to keep up with the pace of modern agricultural development. With the advancement of agricultural technology, the use of chemical herbicides and slow-release fertilizers has made it possible to cultivate corn without tilling the soil, leading to more efficient and sustainable farming methods.
Before planting, farmers should apply 3,000 kilograms of high-quality farmyard manure per acre. In addition, 50 kilograms of long-acting ammonium bicarbonate (produced by Wind City Fertilizer Factory) and 15 kilograms of sulfur should be applied. After forming the ridges, when sowing the seeds, 15 kilograms of DAP (Diammonium Phosphate) from the United States can be used as a basal fertilizer. When applying the fertilizer, it's important to maintain proper spacing and step carefully on the grid to avoid damaging the soil structure.
After sowing, once the seedlings emerge, a pre-emergence herbicide treatment should be carried out after rainfall. A mixture of 0.25 kg of atrazine and 0.25 kg of acetochlor in 75 liters of water can be sprayed evenly over the field, or 0.5 kg of a herbicide containing euphorbiae et al. can be mixed with 75 liters of water for spraying. The spray must be fine and thorough. If the weather is dry, more water should be added to ensure effective coverage. During spraying, care should be taken to monitor wind direction to prevent drift that could harm other crops. After application, avoid walking on the treated area to protect the mulch layer and maintain the effectiveness of weed control.
Once the seedlings have emerged, manual thinning should be performed, and two ridges should be stepped on between the furrows to reduce foot traffic. If weeds are large, a post-emergence herbicide can be applied. For example, 100 grams of dimethyl tetrachlorohydrin can be mixed with 50 liters of water and sprayed on weeds during the 6-leaf stage of corn. Alternatively, 100 ml of 40% clethodim emulsion can be diluted in 30 liters of water and sprayed directly onto the stems and leaves of the weeds. This helps control weeds effectively while minimizing damage to the corn plants.
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