How to promote summer sweet potato production

In recent years, with the deep processing of sweet potatoes, its economic value has continued to grow. The planting area of â€‹â€‹sweet potatoes has been increasing year by year, especially in the summer. To achieve high yields of sweet potato in summer, the following five measures should be taken:

First, timely planting. Early summer sweet potato planting, can promote early growth, early tuber, early ridge closure, extend the expansion period of the tuber. Generally summer sweet potatoes, from June 20 to June 30, planted one night a day, an average reduction of 3%. Therefore, the summer sweet potatoes must be planted early in time and strive to be planted in early July so that the growth period can reach 110 days or more. Only in this way can higher yields be achieved.

Second, lay a potato ridge. Potato ridges are an important factor affecting the yield of summer sweet potatoes. Therefore, it is necessary to lay a potato ridge. To avoid ridging after the rain, because after the rain hit ridges, soil compaction, unfavorable expansion of potato blocks, so grab the sunny day to beat potato ridge, and strive to smash, thorough, short. Earthworms and soil can increase soil voids, increase permeability and water retention capacity; short ridges are beneficial to drainage, prevent soil moisture saturation, and can not only resist drought and flood, but also maintain the air permeability of potato ridges.

Third, give enough base fertilizer. Summer sweet potato growth period is short, increase the base fertilizer, especially the application of hurried Miaofei, can promote the rapid growth of stems. Stem fertilizer is generally applied to 2500-3000 kg of geosynthetic fertilizer per 1/15 hectares. It is best to apply more available potassium fertilizers such as grass and wood ash, and apply 10 to 15 kg of diammonium phosphate per 1/15 hectare when ridging. In order to promote the early emergence of potato seedlings, some nitrogen fertilizers can be applied during the planting of lotus roots. Generally, the amount of nitrogen fertilizer is 3 to 4 kg per 1/15 hectares. Pay attention to seedlings and fertilizer isolation. Finally watering the hole.

Fourth, the election planted head. The sweet potato has good nutrition, strong nutrition, early rooting, early potato production, and high yield. According to the test, the summer sweet potatoes were planted with vines, which increased production by 14.1% compared with planting vines, 18.7% more than planting cold potato shoots, and 22% more than planted fire axillary buds. When planting the head of the vine to keep the top leaves dry, three things must be done: First, with the vine, with the planting, with the water, to prevent the vine leaf dehydration wilting; Second, the leaves on the ground should be moderate, if the 7 leaves are sunny, When planted in the morning, leaves 3 leaves buried in 4 leaves, cloudy days, and when planted in the afternoon, leaves 4 leaves buried in 3 leaves, preferably in the afternoon or in the evening; third, after planting, watering, sealing holes.

Fifth, rational close planting. Summer sweet potato production per plant is relatively low, so the general use of small ridge dense planting in order to play a role in the group's increase in production in order to obtain high yield. Can choose to use short, concentrated potato varieties, pay attention to reasonable dense planting, using small ridge planting, the general ridge distance 60 to 70 cm, spacing 15 to 20 cm, every 1/15 hectare planting 5000 to 6000, seed potato can also be more More dense, up to 7000 strains. When planting short seedlings inserted into the slanting plant, pouring enough water, Feng Yan points, so that early seedlings, early hair trees, early tubers, more than potatoes, a high yield.

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