Controlling the growth of sweet potato can promote high yield.
To control the vigorous growth of sweet potatoes and improve the yield of sweet potatoes, the specific methods are as follows: topping the sweet potato in time, picking the tender head off the sweet potato seedlings, with a length of about 3 cm, generally hitting the top every 15 days, topping 2 or 3 times. In case of heavy rain, pick up the potato seedlings after the rain, and then put them back in the same place, lifting the seedlings without turning them. If it is found that sweet potato vines grow excessively, chemical control should be taken in time. 75 grams of paclobutrazol per mu and 50 kg of water should be sprayed on the leaves, once every 7 to 10 days, twice in a row.
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How to plant autumn sweet potato in a rush
Sweet potato is vulnerable to underground pests, forming insect pathways, so that sweet potato rot, reduce the quality, serious can not be eaten, resulting in reduced production and loss of harvest. In production, the following methods can be taken in time for poisoning control in order to improve yield and quality. 1. During the rapid expansion of sweet potato, 25-30-fold phosphorus was applied to the root every 10-15 days.
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Technical advice on field management of sweet potato in middle stage
In recent years, farmers often reflect that after the cultivated sweet potato seedlings are inserted into the field, the leaves are yellowed and shriveled, and the plants grow very slowly. This kind of potato seedling basically has no yield in the later stage. After investigation, the main reason is the serious occurrence of sweet potato virus disease. Sweet potato virus disease is a common disease of sweet potato.
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