Attention must be paid to potato growth-period management, with a detailed explanation of the key technical points

Increase fertilizer and water application.

From the full flowering stage of potatoes until the stems and leaves senesce, this period is also the time when potatoes need the most fertilizer and water in their entire life cycle. Spray Di Guo Zhuang Di Ling to increase nutrient flow, promote fruit development and expansion, enhance the plant's water and fertilizer uptake capacity, and improve fruit yield and quality. In addition, apply 25 kg of nitrogen-phosphorus-potassium compound fertilizer per mu with irrigation water, or apply about 5 kg of high-potassium water-soluble fertilizer with irrigation water, to ensure a sufficient supply of water and fertilizer.

Pay attention to earthing up.

After potato tubers turn green, their solanine content increases, which not only makes them pungent and numbing to eat and reduces their marketability, but can also cause symptoms of poisoning such as nausea and dizziness. Therefore, earthing up should be done in a timely manner to prevent the above phenomena from occurring. Potatoes generally need to be earthed up 2 times, with a soil thickness of 3-4 cm, to prevent the tubers from being exposed above the ground.

Control excessive growth.

The full flowering stage of potatoes is also the stage when aboveground stems and leaves grow most vigorously. At this stage, attention should be paid to controlling excessive growth to promote the expansion of potato tubers. According to the growth condition of the potatoes, spray Cu Hua Wang No. 3 to force a large amount of vigorous nutrients from the top shoots to flow back, so that the main stem's primary nutrients are redirected to the young fruit development system, enhancing the vitality of fruit expansion, avoiding the phenomenon of enlarged leaves, and improving field ventilation and light penetration.