How to prepare the sweet potato planting? Sweet potato preparation skills!

In China, as one of the economic crops, the sweet potato planting area is quite large, and with the development of science and technology, the processing of sweet potato is getting higher and higher. At present, sweet potato planting is a category that many growers choose to plant. Today, Hui Nongwang Xiaobian follows Everyone talks about the techniques of sweet potato cultivation, how to make the sweet potato planting high yield!

First, the importance of ploughing sweet potato

In the loose and oxygen-rich soil, the sweet potato roots grow fast, deepen, absorb water and fertilizer capacity, and the primordial root formation activity is strong, and it is easy to form roots. At the same time, the sweet potato roots are subjected to small mechanical resistance during the expansion process, and it is easy to form large potatoes, and the potato shape is neat and the potato skin is smooth.

In the loose soil with good ventilation, the root-layer splitting activity and accumulation of nutrient capacity of the sweet potato roots are strong, the roots are swollen quickly, and the nutrients distributed in the shoots are relatively small, which can properly inhibit the growth of stems and leaves, and the growth of stems and leaves is more coordinated with the accumulation of nutrients in the roots. .

When the soil is full of oxygen, it helps the sweet potato roots to absorb potassium fertilizer and store the sugar to the roots. When soil permeability is poor and oxygen is insufficient, the absorption of nitrogen fertilizer is less affected. The proportion of potassium and nitrogen in sweet potato plants is reduced, and the growth of stems and leaves is too strong. Oxygen in the soil is sufficient, aerobic bacteria are active, can accelerate the decomposition of organic fertilizers, become ineffective nutrients, and can continuously supply sweet potato growth in a timely manner.

Second, sweet potato land tillage depth

Deep tillage can thicken the soil layer, make the soil layer loose, enhance the aeration, accelerate the release of soil nutrients, and is conducive to the growth and development of sweet potato roots and the formation of roots. According to the experimental investigation in Xuhuai area of ​​Jiangsu Province, it is generally about 20% of the shallow tillage of 15 to 33 cm. The depth of ploughing should be about 25 cm, generally not more than 30 cm. Because the sweet potato's potato parts are mostly distributed in the range of 5 to 25 cm below the soil surface, there are not many potatoes under 30 cm. If the ploughing is too deep, it will easily disturb the soil layer, and the new soil with less nutrient content in the lower layer will be turned up, and at the same time, the cooked soil will be turned to the lower layer, which is not conducive to the growth of sweet potato, which may lead to production reduction. The ploughing time should be carried out in autumn and winter, so that the soil has a long-term weathering process, which is conducive to the release of effective nutrients, and is conducive to drought prevention and protection. Deep ploughing should be carried out in the soil during the tillage period. It should not be wet, so it is not only labor-saving, but also the soil is loose and can not afford to smash.

Third, sweet potato land improvement method

The clay soil on the sand can be turned over and crushed. In the sandy land under the sand, it is necessary to turn the sticky sand and try to mix the upper and lower layers into the two soils. The alkali is pressed to cut the capillary to prevent efflorescence. The upper and lower layers are all about 50 tons of clay per mu, to enhance soil aeration, increase soil temperature and increase temperature difference; the upper and lower layers are all sand with 40 tons of bay mud per acre to increase soil water storage. Fertilizer capacity. Sand land, alfalfa soil plus organic fertilizer, river pond mud or straw returning to the field, planting or intercropping, nesting, and rotation for green manure can not only improve soil structure, increase soil fertility, but also inhibit salt return and promote rain and salt.

Building terraces is a fundamental measure to improve the dry land of hills. When building terraces, it is necessary to dig high mats, and the surface is guaranteed to have a certain layer of mature soil and build earthworms or sarcophagi according to conditions. At the same time as the construction of the terraces, the drainage ditch should be repaired to facilitate the water.

Four ridges

The sweet potato is cultivated with high ridges, and the yield is significantly increased. The ridges are thickened to the soil layer, which improves the ventilation conditions, is conducive to ventilation and light transmission, is easy to drain, raises the ground temperature, and increases the temperature difference between day and night. According to the survey, ridges generally increase production by more than 10%.

When ridges are required, the ridges are straight, the ridges are flat, the ridges are evenly spaced, the ridges are solid, and there is no hard heart in the ridges. Doing ridge specifications should be based on soil quality, topography, and annual drought and flood conditions. Flat land, depression and rice paddy field with high groundwater level, the ridge shape is about 30 cm high, the ditch is deep and narrow, so as to facilitate drainage and waterlogging; the sand is large, the terrain is high, and there is no threat of waterlogging. Generally, narrow ridges are used. ~ 80 cm, ridge height of 20 cm or so, in order to protect against drought and moisture; soil is more sticky, low-lying terrain, rainfall, the use of large ridges, ridge spacing of 1 ~ 2 meters, ridge height of 33 cm or so, to facilitate drainage.

The direction of the ridge is better in the north and south in order to get enough sunshine. The east-west potato ridges are less exposed to light in the north, which is not conducive to the growth of sweet potatoes; the ridges on the hillsides are ridged at right angles to the slope of the slopes to facilitate water storage and prevent the soil from being washed away by rain; the ridge of the sweet potato is best The direction of the crops is consistent. When doing ridges, it is required to be dry and not wet. If it is too wet, it will be easy to produce filth and run through the wind.

In the view of Hui Nong.com, the most important step in sweet potato planting is the land preparation before planting, because this determines the growth of sweet potato, so the growers should not slop through the land before planting sweet potatoes. Look!

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