Late planting rapeseed winter tube focus on fertilization

Late-planted and weeded rapeseed is typically transplanted during the rainy season. Due to severe soil compaction, timely cultivation is essential to loosen the soil, promote root development, and improve aeration. Cultivation also helps remove weeds and break up clods, ensuring better growth conditions for the seedlings. Once the plants recover, deep cultivation should be carried out to keep the soil loose and well-drained. At the same time, the three ditches—field ditch, furrow, and drainage ditch—should be cleaned to ensure proper water flow and prevent waterlogging, which can raise the ground temperature and improve overall plant health. After transplanting, it's crucial to apply seedling fertilizer as soon as possible. A recommended mixture includes 3–5 kg of urea, 5 kg of potassium chloride, 300–500 g of boron fertilizer, and 750–1000 kg of diluted manure per mu. Alternatively, 45–50 kg of ammonium sulfate per acre can be used. This helps accelerate the green-up process and makes full use of the higher temperatures after the weather clears, promoting rapid leaf and root development. For heavy fertilization, organic fertilizers are ideal. In medium-fertility fields, applying 1000–1500 kg of pig manure per mu, along with 10–12 kg of superphosphate and 5–7.5 kg of ammonium bicarbonate, is effective. These nutrients are mixed and applied directly to the seedling rows, combined with cultivation to enhance warmth, root development, and overall plant resilience. Foliar application of phosphate fertilizer can boost cold resistance in rapeseed. To prepare the solution, take 2 kg of fine phosphate fertilizer per acre, soak it in water for a week, then add 200 g of urea before spraying. If the solution is insufficient, a small amount of clean water can be added. Spraying should be done on a sunny afternoon with no strong wind to reduce evaporation and maximize absorption. Spray every one to two weeks. Observations show that within three days of spraying, some yellowed leaves turn green again, and growth accelerates. After a second application, the number of leaves increases from four or five to eight or nine, becoming thick, strong, and upright. To control early flowering caused by excessive vegetative growth before winter, deep cultivation is recommended for well-growing fields. For weaker fields, reapplying nitrogen fertilizer can delay vegetative growth, increase biomass, and prevent premature flowering. Promoting strong seedlings in late-planted rapeseed is key to achieving high yields. After the start of spring, apply 8–10 kg of urea per acre, followed by an additional 5–7 kg after the tillering stage. This helps build a strong seedling structure and supports high yield. It’s also important to prevent downy mildew in late spring rapeseed. During flowering, pesticides like virulence and chlorhexidine can be used for effective disease control. Author: Cao Di Ring Source: Farmers Daily

Fluorine Lined Valve

Fluorine Lined Valve,Lined Butterfly Valve,Electric Rubber Lined Butterfly Valve,Fluorine Lined Ball Valve

CEPAI Group Co., Ltd. , https://www.jscepai.com