Main technical measures after sweet potato cuttings

May 14, 2023

Water and gas co-ordination. The suitable water capacity for sweet potato growing soil was 60%-70% in the previous period, 70%-80% in the middle period, and 60% in the later period. When potato leaves wilting due to drought in the morning, they should be timely filled with “running horse water” (wet wet ridges can be), and do a good job of drainage and stain prevention work in rainy days. No irrigation for 15 days before harvesting.

High-yield groups regulate. High-yield groups regulate their goals: early-onset early-onset, medium-term stable, and late-stage and premature. The methods and ways to achieve the goal: First, check the seedlings in time to ensure that the whole seedlings. The second is the plot of the late growth period, to take measures to control vines. Third, late growth of sweet potatoes, poor growing plots, should be based on seedlings phenanthrene available fast-acting nitrogen fertilizer to prevent premature aging; pale leaf color, mu with imported urea 1.5 kg plus 0.2 kg of potassium dihydrogen phosphate water 60 kg, in sunny After 4 pm, spray the leaves and spray them once a week.

Comprehensive prevention and control of pests and rats. The prevention and control of sweet potato pests and diseases must adhere to the principles of agricultural prevention and control and chemical prevention as the supplement. We will fully implement agricultural control measures such as "selecting disease-resistant and insect-resistant varieties, scientific management of water, and reasonable fertilization." Prevention and control strategies should adhere to the principle of "prevention first, comprehensive prevention and control." On the basis of forecasting and forecasting, timely and scientifically selecting high-efficiency, low-toxicity, low-residue pharmaceuticals for prevention and control based on seedling conditions, weather, and pests and diseases, improving control effectiveness, minimizing the number of years and months and reducing environmental pollution.

In recent years, the major pests and diseases of sweet potato have been characterized by heavy pests and light disease. There are: Spodoptera litura, small weevil and so on. The control of Spodoptera litura can use Averic salt or viral polyhedral pesticides, and the control effect is better. The control of the small weevils can choose 10% of chlorpyrifos granules 2 kg or 3% of phoxim granules 3 kg of sweet potato to expand the cracks When the sweet potatoes are spread around the sweet potato stems, the control effect is better.

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