What are the fertilizer requirements of ginger?

What are the fertilizer requirements of ginger? Please explain in detail the fertilizer requirements of ginger: (1) the growth of ginger needs comprehensive nutritious fertilizer, and all kinds of nutrient elements are indispensable, otherwise it will have a certain impact on its yield and quality. Ginger needs to absorb nitrogen, phosphorus, potassium, calcium, magnesium, boron, zinc and other elements continuously in the process of growth, among which nitrogen, phosphorus and potassium have the greatest effect on yield. Due to the different growth of ginger in different periods, the absorption of various mineral elements is also different. Generally speaking, the absorption of mineral elements is consistent with its growth law, specific to various elements, but also has its own characteristics. It is reported that the absorption of nitrogen, phosphorus and potassium by ginger shows a typical "S" curve, which is consistent with its own growth law. In the seedling stage, the plant growth is slow, the growth is small, and the seedlings absorb less nitrogen, phosphorus and potassium. The absorption of nitrogen, phosphorus and potassium accounts for 12.59%, 14.44% and 15.71%, respectively. No matter the absolute or relative amount of absorption, ginger plants absorbed the most potassium at seedling stage, followed by nitrogen and phosphorus. During this period, the absorption of nitrogen, phosphorus and potassium accounted for 14.4% of the total absorption, and the absorption ratio was 1.83. After the three-share right period, the plant growth rate accelerated, the number of bifurcations increased, the leaf area expanded rapidly, and the rhizome grew vigorously, so the amount of fertilizer needed increased rapidly. The absorption of nitrogen, phosphorus and potassium in the whole vigorous growth period accounted for 87.41%, 85.56% and 84.29% of the total absorption in the whole growth period, respectively. The exuberant growth period can be subdivided into three periods, namely, the early, middle and late periods. In the early stage of blooming, the absorbed nitrogen accounted for 34.75%, phosphorus 35.03%, potassium 35.18%, and the absorption ratio was 1.48. The amount of nitrogen, phosphorus and potassium absorbed in the middle stage of full growth accounts for 21.3% of the total absorption, and the absorption ratio is 1.47, which is basically the same as that in the early stage of full growth. The nitrogen absorbed in the later stage of prosperous growth accounted for 31.43% of the total absorption, phosphorus accounted for 29.27%, potassium accounted for 27.75%, and the absorption ratio was 1.29. From the absorption ratio of nitrogen, phosphorus and potassium in different growth periods, it can be seen that with the advance of the growth period, the absorption ratio of potassium decreased slightly and the absorption ratio of nitrogen increased slightly. In a word, the absorption of potassium by ginger was the largest, followed by nitrogen and phosphorus, and the absorption ratio was 1.46. In addition to absorbing a large amount of nitrogen, phosphorus and potassium, ginger also absorbs elements such as calcium, magnesium, boron and zinc. Ginger has the same absorption law of calcium and magnesium, and the absorption amount is also very similar. At harvest, a single plant absorbs about 461.5 mg of calcium and 483.03 mg of magnesium. The zinc absorption of ginger showed an exponential curve. In the late growth stage, the daily zinc absorption per plant reached 49.5 micrograms, which was nearly twice as high as that in the early growth stage. The absorption of boron shows a double "S" curve, and there is a flat absorption zone in the middle stage of growth. According to the sampling at harvest, the absorption numbers of calcium, magnesium, boron and zinc per plant were 461.5 mg, 483.07 mg, 1 340.26 μ g and 3119.51 μ g, respectively. According to the experimental measurement, for every 1000kg fresh ginger, it is necessary to absorb 6.34kg of nitrogen (N), 0.57kg of phosphorus pentoxide (P2O5), 9.27kg of potassium oxide (K2O), 3.69kg of calcium (Ca), 3.86kg of magnesium (Mg), 3.76g of boron (B) and 9.88g of zinc (Zn). (2) the growth of ginger requires that on the basis of sufficient organic fertilizer, a large number of element fertilizers such as nitrogen, phosphorus and potassium are applied together, and trace elements such as zinc and boron are supplemented at the same time in order to achieve high yield and high quality. 1. Applying sufficient basic fertilizer combined with deep ploughing and soil preparation, applying 1200-2000 kg of high-quality mature organic fertilizer, 60-80 kg of pure sulfur-based organic-inorganic compound fertilizer (13-7-10), 1 kg of zinc sulfate and 1 kg of borax per mu. 2. Reasonable topdressing ① light application of strong seedling fertilizer: when the seedlings grew 1-2 branches in the middle and first ten days of June, the secondary fertilizer was applied combined with watering, with an interval of 10-15 days, 15-20 kg of high-nitrogen compound fertilizer per mu. ② heavy application of jointing fertilizer: also known as turning fertilizer (before and after the Beginning of Autumn), three-branch stage, ginger enters the vigorous growth period, which is the key period of topdressing, applying organic-inorganic compound fertilizer (13-7-10) 70-80kg per mu. ③ application of supplementary fertilizer: during the tuber expansion period, when 6-8 bifurcations appeared in the middle of September, about 40-50kg of high nitrogen and potassium compound fertilizer was applied per mu, with an interval of about 15 days. Click to get more ginger planting techniques click to get more vegetable planting techniques