How much is a jin of potatoes in 2020 and how to fertilize them?
The potato is what we call the potato, a food that can be used both as a vegetable and as a staple. Potatoes are rich in starch and have a soft, crisp texture when eaten, with different varieties having different textures. Potatoes are grown all over the world, let's take a look below at roughly how much a jin of potatoes cost in 2020, with fertilization methods attached.
1. Roughly how much did a jin of potatoes cost in 2020?
In January 2020 the price of potatoes was roughly 1-2 yuan per jin, with a certain amount of variation between regions. According to relevant websites, we can learn that the recent price changes of potatoes are as follows:
At the Ganlusi Vegetable Wholesale Market in Changde, Hunan, the potato price is 1.4 yuan per jin; at the Jishou Vegetable and Fruit Wholesale Market in Jishou, Hunan, the potato price is 1.3 yuan per jin;
At the Beijing Dayanglu Agricultural and Sideline Products Wholesale Market, the potato price is 1.3 yuan per jin;
At the Xinfadi Agricultural Products Wholesale Market in Fengtai District, Beijing, the potato price is 1.1 yuan per jin;
At the Jingxi Fruit and Vegetable Wholesale Market in Huailai County, Zhangjiakou City, Hebei Province, the potato price is 1.5 yuan per jin;
At the Siqing Agricultural Products Wholesale Market in Bayannur City, the potato price is 1 yuan per jin.
2. Potato fertilization methods
Potato fertilization is generally based mainly on organic fertilizer, appropriately combined with chlorine, phosphorus and potassium chemical fertilizers; at the same time, applying trace element fertilizers can also increase yield and improve quality. The potato is a potassium-loving crop, and the application of potassium fertilizer has an obvious effect on raising yield, with potassium sulfate giving even better results.
1. Fertilization amount: apply 300-500 kg of organic fertilizer per mu, 6-7 kg of pure nitrogen, 4.5-5.5 kg of phosphorus pentoxide, and 8-9 kg of potassium oxide.
2. Fertilization period: nitrogen fertilizer should be applied in stages, using a combination of base fertilizer, seed fertilizer and topdressing to meet the potato's nitrogen requirements at each stage. Phosphorus fertilizer is generally mostly applied as base fertilizer or seed fertilizer; if used as topdressing it should be applied deeply, but its fertilizer efficiency is still not high. Potassium fertilizer can be applied as base fertilizer or seed fertilizer, or as a later foliar topdressing.
3. Fertilization method: base fertilizer mostly uses 300-500 kg of organic fertilizer mixed with 15-20 kg of compound fertilizer. The specific methods are: first, autumn application, that is, before autumn plowing, spread the organic fertilizer and chemical fertilizer on the surface, then plow and harrow so that the fertilizer and soil are fully mixed. Second, spring application, that is, spread on the surface before spring plowing, then plow and harrow. Third, applying seed fertilizer, applied along the row in the sowing furrow at sowing time.
Topdressing should be applied reasonably in combination with the potato's growth stages. The time can be chosen at the seedling stage, bud stage and early growth stage, and different fertilizers should be selected for each topdressing, with nitrogen, phosphorus and potassium applied in combination. Generally, at the seedling stage and bud stage, nitrogen fertilizer and phosphorus fertilizer can be applied as topdressing, using 25 kg of ammonium sulfate, 20 kg of diammonium phosphate and 20 kg of potassium sulfate per mu. At the bud stage and early flowering stage, phosphorus and potassium fertilizers are applied, using 10 kg of diammonium phosphate plus 15 kg of potassium sulfate. After the early flowering stage, nitrogen fertilizer must never be used again, so as to avoid causing excessive vegetative growth of stems and leaves and affecting the transport of nutrients to the tubers.