Ingenious fertilization of sweet potato planting
How to apply sweet potato? Everyone knows that they want to grow sweet potatoes. Fertilization is a key part. Here is a brief introduction to fertilization techniques during sweet potato planting. First, lightly apply nitrogen fertilizer. Excessive nitrogen fertilizer will cause stems and leaves to grow wild and consume a lot of nutrients. When the fruit is expanded in the later stage, the nutrient supply is insufficient, resulting in small fruit and reduced yield. Second, more phosphorus and potassium fertilizer. Phosphate fertilizer has the function of loosening soil and promoting flower bud differentiation. Potassium fertilizer can promote the thickening of sweet potato stems and fruit expansion. Third, re-apply organic fertilizer. Once I heard a potato farmer say: "There was no chemical fertilizer more than 40 years ago. We used the sweet potato from the pig manure. The big one can weigh more than ten kilograms. The output is high and the taste is good. Now I can't grow it. This kind of sweet potato?" This actually illustrates a problem: tuber crops such as sweet potato and potato strongly like organic fertilizer, organic fertilizer is effective, and the strength is strong, which is unmatched by chemical fertilizer. Fourth, skillfully apply foliar fertilizer. Ten days before the start of the fruit expansion, the leaf surface must be sprayed with potassium dihydrogen phosphate once. Fifth, use biological fertilizer. As the saying goes, "If you want to grow a good land, you should raise the soil first." Biological bacteria can play a very unique role in disease resistance and soil improvement.
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