As the saying goes: "When you plant sweet potato seedlings in the valley rain, you can harvest a big basket of sweet potatoes", "If you plant sweet potatoes before and after the rain in the valley, it is best not to go through the beginning of summer". Now that it has come to the valley rain solar term, our farmers and friends are not going to hurry up to prepare to plant your sweet potatoes, don't miss the golden period of planting sweet potatoes before and after the valley rain, otherwise your sweet potatoes will neither grow big nor grow well, this is just like the saying - "rather call the seedlings and other places, not call the ground and wait for the seedlings", "sweet potatoes are not coincidental, as long as the seedlings are planted early", "sweet potatoes are planted late, and the potatoes are like sheep's beards".
Taking advantage of the current peak period of sweet potato planting, the next two days of articles on agricultural technology will tell you: when planting sweet potatoes in spring, when is it easier to plant seedlings to achieve high yield? What kind of sweet potato seedlings are easier to plant in spring to achieve high yield? How many sweet potato seedlings are planted per mu in spring to achieve high yield?
1. When is it easier to plant sweet potato seedlings in spring to achieve high yield?
For sweet potatoes planted in spring, as long as the temperature reaches about 15 degrees, the earlier the sweet potato is planted and planted, the longer the whole growth cycle of sweet potatoes from planting to harvest (planting sweet potatoes one day earlier can grow one more day), so that the underground potato pieces of sweet potatoes (sweet potatoes) can get a longer expansion and fullness period in the later stage, so that the sweet potatoes planted by our farmers can grow larger, heavier and fuller when they are ripe and harvested, so that the sweet potatoes in the field can obtain higher yield and quality. If the sweet potato planting time is too late (it is difficult to achieve high yield of late planted sweet potato), it will lead to late growth, short growth period, insufficient expansion and development of potato tubers or insufficient grain filling weight gain of sweet potatoes, which will cause a lot of yield loss due to small size and low single weight of sweet potatoes during harvesting.
Therefore, if you want to achieve high yield and income increase in the later stage of sweet potato, you should try to plant sweet potato seedlings (15-25 degrees) as early as possible in spring, but you must not blindly plant seedlings too early, when the local temperature is less than 12-13 degrees, it is not recommended to plant sweet potato seedlings in the small back basket of agricultural technology.
Generally speaking, the time for planting sweet potato seedlings in most areas is mainly concentrated in April before and after the valley rain solar term (try to plant sweet potato seedlings before the beginning of summer in early May), but there is a big difference in the time of sweet potato planting in the north and south: for example, some areas in the north where the spring climate is very cold and the weather warms up slowly and late, may need to wait until the end of April or even the middle and early May when the temperature rises and stabilizes before planting sweet potato seedlings (such as waiting until the beginning of summer-miscanthus planting before and after sweet potatoes), while some spring climates in the south are warm and hot. In areas where the weather warms up quickly and early, it is possible to reach a temperature suitable for sweet potato transplanting from mid to early April (for example, sweet potatoes can be planted during the Qingming Festival).
Do you think that it is not very good to accurately judge the earliest planting time of sweet potatoes according to the solar terms? This does not matter, the agricultural technology basket here to tell you a quick judgment of sweet potatoes can be planted early tips, as long as you remember, you can be early planting spring sweet potatoes on the basis of your sweet potatoes in the early stage, so that your sweet potatoes in the later stage to obtain a higher yield.
You don't need to see the month and solar term when planting sweet potatoes in spring, you only need to pay attention to the spring temperature in your home (look at the medium and long-term weather forecast) - under normal circumstances, when the average temperature of the spring day and night in your home rises and stabilizes to 15 degrees (more than 15 degrees), you can quickly go to the ground to plant sweet potato seedlings.
2. What standard sweet potato seedlings are easier to plant to achieve high yield?
Many farmers breed and cultivate sweet potato seedlings by themselves with sweet potato tubers, and many farmers are accustomed to buying seedlings directly when planting sweet potatoes. Note: (1) It is recommended to cut the seedlings on the same day of planting, and the seedlings cut out on the same day should be planted on the same day; (2) The time to buy seedlings should not be too long from the planting time, so as to prevent the seedlings from wilting and reduce the survival rate after planting and the overall yield of sweet potato in the later stage.
Then the problem comes: planting sweet potatoes, whether planting the seedlings vertically (straight planting method), or planting the seedlings diagonally (oblique planting method), or planting the seedlings lying flat (inverted planting method), because we all need to plant the lower half of the sweet potato seedlings into the soil, so that the stems of the lower half of the sweet potato seedlings are buried under the moist soil. The stems and leaves of the tip part are exposed on the ground, therefore, the seedlings of sweet potato grow too long and too large to be suitable for transplanting and planting (the seedlings with too long stem nodes and too old grow slowly after planting), on the contrary, the sweet potato seedlings grow too short and too small and are not suitable for transplanting and planting (the seedlings that are too delicate and small grow weakly and have low yield after planting), these two situations are not conducive to the slow seedling and survival of newly planted seedlings, nor can they guarantee that sweet potatoes can smoothly produce more fruit and high yield in the later stage.
In fact, this problem is very simple: under normal circumstances, when the height of local melon seedlings grows to about 15-30 cm high or 6-9 pieces grow on the sweet potato seedlings, the sweet potato seedlings at this time are the most suitable for us to pick seedlings and transplant seedlings to plant the robust seedling standard - the seedling age is about 30-50 days, the weight of a single seedling is more than 6-7 grams, the seedling height is about 18-25 cm, there are 5-8 stem nodes and the base is thick and the stem nodes are short and strong, the leaves are thick and thick and green, the top 3 leaves grow flush, and there are no aerial roots and black roots in the lower part. After this kind of high-quality and robust sweet potato seedlings are planted in the ground, the slow seedlings take root and germinate quickly, the survival rate after planting is high, the seedlings grow vigorously and robustly, and the potatoes set early and set large, which is very conducive to promoting the sweet potato to achieve high yield in the later stage.
Generally speaking, when the length of the sweet potato seedlings propagated and cultivated by your family is less than 15 cm or more than 30 cm in length, the number of stem nodes is less than 3-4 nodes or the stem nodes are too tender and too old, and the number of leaves is very scarce or very large, this kind of seedlings are not suitable for sweet potato transplanting and planting, and are not conducive to the high yield and harvest of sweet potato.
3. When planting sweet potatoes (taking spring sweet potato planting as an example), how many seedlings are planted per mu to achieve high yield?
The planting density and planting pattern of sweet potatoes have a great impact on the number of sweet potatoes, the size of the potatoes and the yield and quality - the planting is too thin, although the tubers are large, but the total number of potatoes cannot be increased, the planting is too dense, although the knots are more, but the size of the tubers will not be too large, both of which can not make the sweet potatoes achieve the highest yield. Only by maintaining the planting density allows sweet potatoes to have sufficient and reasonable space for growth and potato setting, so that sweet potatoes can bear more fruits, bear larger fruits and achieve high yields.
But the sweet potato planting density is not determined casually, which should consider the planting season, variety, land conditions and other flexible determination, for this agricultural technology small back basket to give you a few suggestions for planting sweet potatoes in spring: the density of sweet potatoes planted in spring is generally mastered in the number of seedlings per mu about 3000-4000 is the most conducive to high yield in the later stage, however, if the sweet potato planting area is deep and fertile, the weather is dry and rainless, the fertility level is high or the planting is a long vine / large leaves / loose plant type / large tuber varieties, If the sweet potato planting land is poor and shallow, the weather and rain conditions are better, the fertility level is poor or the planting is a short vine / small leaf / compact plant / small tuber varieties, planted with fresh food-based varieties, then the number of seedlings planted per mu in spring can be appropriately increased by about 3500-4500.
When we plant sweet potatoes, some are planted in a single row with narrow ridges, and some are planted in double rows with wide ridges, and we also need to remind everyone that (1) the sweet potatoes that are blindly planted too densely in spring may not be able to achieve the highest yield (sweet potatoes planted in summer and autumn are suitable for dense planting), and the sweet potatoes that are overly densely planted are easy to reduce yield; (2) if you adopt the planting mode of wide ridges and double rows, then the yield per mu of sweet potatoes under this planting mode will be relatively high, but the large sweet potato pieces produced by a single tree will be less. If you use the planting mode of narrow ridges and single rows, then although the yield per mu of sweet potatoes under this planting mode will not be very high, the large sweet potato pieces produced by a single tree will be larger, and the small and medium-sized ones will be less. You must pay attention to this point when planting sweet potatoes.
Another point to note is that compared with sweet potatoes planted on flat land, sweet potatoes planted with ridges will have more advantages in terms of overall growth, the number of potatoes, the size of potatoes, the quality of potato pieces, drought and flood resistance, and the reduction of the incidence of pests and diseases.
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