Sweet potato turning will reduce production
Many farmers are accustomed to turning sweet potatoes. They believe that turning sweetpotato can suppress the growth of stems and leaves and promote nutrient transfer to the tubers. In fact, on the contrary, first of all, the natural distribution of sweetpotato pods in the field is very reasonable, and the leaflets can be kept in the optimal light receiving position by the rotation of the petiole, and the leaflets will be turned over and overlapped, and it takes only one to two days to adjust to The optimal distribution state delays the photosynthesis time, greatly reduces the photosynthetic efficiency, reduces the photosynthetic product, and increases the respiration intensity of the leaf after turning over, which also consumes a part of organic matter and affects the expansion of the tuber. Secondly, turning pods can cause damage to the vines and leaves, and the reduction in leaf area can also affect the growth of the yams. In the end, the adventitious roots were cut off, which reduced the absorption of nutrients and water, broke the rational distribution of nutrients, accelerated the nutrient transfer to the stems and leaves, and affected tuber enlargement. Practice has proved that the more trips, the heavier the reduction in production, generally can reduce production by about 15%.
If the rain is frequent, there are more adventitious roots on the stems of sweet potato, and the stems can be gently picked up by hand to pull the adventitious roots without damaging the stems. At the same time, remove the weeds from the ground and return the stems to their original positions.
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