Technical Measures for Potato Cultivation Management

Strengthening fertilizer and water management

This year, Jianchuan has a relatively dry climate in the early stage. It should be watered once during the budding stage, and a small amount of watering should be carried out during the flowering and flowering stages depending on the weather. If the rainfall in the later period is large, pay attention to drainage and prevent water accumulation. Combined with cultivating soil every time, topdressing, 5kg of urea and 5-10kg of potassium sulfate per acre were applied to prevent premature plant senescence and promote tuber set. In the potato swelling period, spray 5 to 10 kg of a 0.2% potassium dihydrogen phosphate aqueous solution per acre. When the plant parts appear excessively long, spray chlormequat or PP333 1 or 2 times to control the plant height below 60 cm.

Third, pest control

Potato diseases and pests are early blight, late blight, and leaf miner. Monitoring of pests and diseases should be strengthened. Central diseased plants should be removed in time, taken out of the field to be destroyed, and dead lower leaves removed; timely drug control: early blight, 58% for late blight. Metalaxyl manganese-zinc 1000 times, or 64% antiviral alum wettable powder 500 times liquid, or 25% yekuling 250-400 times liquid, once every 7 to 10 days, continuous control 2 to 3 times. The leaf miner is controlled by 25% spot latent net emulsifiable concentrate 1500 times liquid or 48% chlorpyrifos 1500 times liquid or 98 Badan original powder 1500 times liquid or 1.8% ifodin EC 3000 times liquid.

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