Sweet potatoes are also called sweet potatoes, sweet potatoes, etc., but the names are different in different places. Sweet potato as an ancient food crop, has always been loved, the mainland from the south to the north of the planting, although sweet potato in the planting and management is particularly simple, not as complex as planting vegetables, but want to get high yield, also need to master a certain planting and management methods. Today, I will introduce to you the five essential points in sweet potato planting and management, which of these points cannot be ignored, let's take a look together.
First, the transplanting method
Sweet potatoes are generally transplanted with seedlings, but transplanting needs to pay attention to the method, and it cannot be planted in the ground casually like transplanting vegetables. There are two ways to transplant sweet potatoes:
First, it is necessary to plant shallowly: because the sweet potato pieces are developed and grown close to the ground, if the transplanting is deep, the potato pieces are difficult to develop. Therefore, sweet potatoes should be planted shallowly, not deeply. Generally, the transplanting depth is 5-7 cm.
The second is to plant obliquely: sweet potatoes cannot be transplanted upright, and if transplanted upright, it is difficult to set potatoes. Therefore, when transplanting sweet potatoes, the seedlings should be inserted diagonally into the soil, and the slope is as large as possible, and the longer the stem segment inserted into the soil, the better. For example, a 20 cm long sweet potato seedling can be inserted diagonally into the soil for about 15 cm, and about 5 cm can be exposed on the ground.
2. Fertilization
Sweet potato's favorite fertilizer is potassium fertilizer, of course, other fertilizers can not be missing, in general, the base fertilizer can be used with rotted organic fertilizer with superphosphate, potassium sulfate, etc., but the base fertilizer can not use urea, ammonium bicarbonate and other fertilizers. Sweet potato in the case of using organic fertilizer as base fertilizer, generally do not need to top dressing, if the bottom fertilizer does not use organic fertilizer, it is necessary to carry out top dressing when the potato seedlings are quickly sealed, and most of the top dressing for sweet potatoes is watered, and the roots are irrigated with manure water with potassium fertilizer. At the same time, foliar spraying, foliar fertilizer commonly used is potassium dihydrogen phosphate, which can be sprayed from 20 days after transplanting, and once every 10 days or so, which can significantly improve the yield of sweet potatoes.
3. Turn over the vines and lift the vines
After the sweet potato is transplanted, it cannot be left alone, and when the potato vine grows to more than 40 cm, it is necessary to carry out the vine lifting. Because the rattan of sweet potato is crawling and growing, in the process of growth, adventitious roots will grow on the rattan, and if the vine is not lifted, the root system on the potato vine will be rooted in the soil, affecting the development of the taproot tuber. Therefore, in the management, it is necessary to raise the vine once in a while, and the whole growth period can be lifted about 3 times, especially in the case of continuous rainy days, the root system on the potato vine grows quickly, and the vine should be lifted and turned over in time on sunny days after the rain.
Fourth, prevent the growth of the long
In the later stage of planting sweet potatoes, the most feared seedlings are vigorous, and once the potato seedlings are vigorous, it will lead to a decrease in yield. Because the seedlings are vigorous, the tubers will not get enough nutrients, and they will develop slowly and expand slowly. Therefore, in addition to using less nitrogen fertilizer in fertilization, the growth of seedlings can be controlled by pinching the tip and topping when the potato vine is about to seal the ridge. It can also be sprayed with a high concentration of potassium dihydrogen phosphate (150 times with water).
5. Weeding and loosening the soil
Sweet potatoes in dwarf crops, can not stop the growth of weeds, throughout the growing period to remove weeds in time, so as not to affect the normal growth of sweet potatoes. Weeding can be carried out at the same time as hoeing and loosening the soil, because sweet potatoes not only like a clean soil surface, but also like loose and breathable soil. For large-scale planting, manual weeding is time-consuming, and the corresponding herbicide can be selected, so that weeds in the sweet potato field can not breed weeds.
These are the five key management points of sweet potatoes, and if you do these well, it will be easy to achieve high sweet potato yields.