In the selected fields, start by applying organic fertilizer to enrich the soil. Once the fertilizer is evenly distributed, level the ground to ensure uniform heat absorption. During the summer’s high-temperature period, cover the entire area with a transparent heat-absorbing film or old agricultural plastic sheeting. This method effectively traps solar radiation, allowing the soil surface temperature to rise above 50°C within 20 days. This intense heat helps eliminate most weeds, their seeds, and harmful pathogens present in the soil.
If possible, you can also seal the greenhouse during this hot season for approximately 10 days. Under such conditions, the soil surface temperature can exceed 80°C, which is sufficient to kill most common pests. This technique is particularly effective when combined with other soil management practices.
Where feasible, implementing crop rotation between dry and wet land can further enhance soil disinfection. By alternating crops, you reduce the buildup of specific pests and diseases that target certain plants. For example, planting Chinese cabbage in disinfected soil significantly reduces the occurrence of weeds and pest infestations, leading to healthier and more productive crops. This approach not only improves yield but also supports sustainable farming practices by reducing the need for chemical pesticides.
ZHONGSHAN G.H.L. TRADING CO., LTD. , https://www.ghltrade.com