Sweet potato fertilization has its subtleties: keep these four points in mind
1. Harvest at the right time and avoid mechanical damage. Summer sweet potatoes should be fully harvested around Frost's Descent, and autumn sweet potatoes before the Start of Winter. Choose a sunny day for harvesting, and when digging the tubers, minimize or avoid causing wounds. 2. Select healthy tubers carefully to ensure safe storage in the cellar. Before the sweet potatoes go into the cellar, select them carefully, discard diseased, damaged and rotten tubers, let the moisture dry off, then store...
The sweet potato transplanting stage is coming around again, and sweet potato growers are starting to prepare the supplies they need. Here are a few fertilization suggestions for sweet potatoes, for everyone's reference:1. Apply nitrogen fertilizer lightly. Too much nitrogen fertilizer causes the stems and leaves to grow wildly, consuming a large amount of nutrients; by the later stage of tuber bulking, the nutrient supply is insufficient, leading to small tubers and reduced yield.
2. Apply more phosphorus and potassium fertilizer. Phosphorus fertilizer helps loosen the soil and promote flower bud differentiation, while potassium fertilizer helps make the sweet potato stems thick and strong and the tubers expand.
3. Apply heavy amounts of organic fertilizer. Once I heard a sweet potato grower say: "More than forty years ago there was no chemical fertilizer. The sweet potatoes we grew with pig and cattle manure could weigh more than ten jin each for the big ones, the yield was high, and the taste was good too. Why can't we grow sweet potatoes like that now?" This actually illustrates a point: tuber crops such as sweet potatoes and potatoes strongly prefer organic fertilizer. Organic fertilizer has steady effectiveness and strong residual power, which chemical fertilizers cannot match.
4. Apply foliar fertilizer skillfully. Ten days before tuber bulking begins, be sure to supplement the leaves with one spraying of monopotassium phosphate.
5. Use microbial fertilizer well. As the saying goes, "If you want to farm well, first build up the soil well." Beneficial microbes can play an extremely unique role in disease resistance and soil improvement.