Scientific formula applied enough base fertilizer. It is determined that for every 500 kg of potato produced, 1.75 to 3 kg of nitrogen, 0.9 to 1.5 kg of phosphorus pentoxide, and 4 to 6 kg of potassium oxide must be absorbed from the soil. For high-yield potatoes, balanced formula fertilization must be adhered to, and basal fertilizers account for about 70% of total fertilizer requirements. It is recommended that 2500 kilograms of rotten cooked farm manure should be applied to basal fertilizer acres, and unrotten chicken and duck manure and pig manure should not be applied, and 15 to 20 kilograms of urea, 25 to 40 kilograms of phosphate fertilizer, 20 to 25 kilograms of potassium sulfate, or a combination of corresponding contents should be avoided. fat. Farmers who have not accumulated farm manure can apply 50 to 60 kg of sulfur-containing compound fertilizer per mu, and then apply 150 to 200 kg of commercial organic fertilizer. After the seed potato emerges, it should be topdressed as soon as possible, and it should be chased 2 or 3 times depending on the condition of the seedling. In the flowering period, 0.2% Sule boron solution can be sprayed outside the root, and in the later period, 1% potassium sulfate and 0.2% -0.3% potassium dihydrogen phosphate solution can be sprayed. Coping with deficiencies and preventing diseases. Improper fertilization during potato production can cause physiological diseases. If the nitrogen is insufficient, it will retard growth, the leaf color will fade first, and then become gray. The lower leaves will wither, the leaf area will be suppressed, the potato pieces will be small, and the yield will be low. Too much nitrogen will make the plant grow too long, the stem base is weak, susceptible to disease or lodging. If the phosphorus is insufficient, the plants are thin, the leaves are slightly curled, the carbohydrates of potato pieces are reduced, and hollows are easy to occur. The potato pieces have rusty spots and are difficult to cook. If the potassium is insufficient, the stems of the plant are dwarfed in clusters, some are curved, the internodes are short, the leaf color is dark green and then copper-colored, and some of the leaf edges are scorched, the veins are sunken, the potato is shaped into a spindle shape, and the flesh is gray. black. Such as boron deficiency, potato pieces are degraded and cracked. Therefore, according to different soil quality and fertility, the missing elements should be replenished early to prevent diseases. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone Lettuce Hydroponic Greenhouse,Hydroponic Growing System,Glass Greenhouses Garden,Pvc Channel Vertical Hydroponic Growing Qingzhou JuLong Agriculture Equipment Co.,Ltd , https://www.julonggrowtech.com
Understand the characteristics of potato growth and fertilizer requirements. Potatoes are resistant to low temperature and high temperature, and can germinate at 4 ° C, but stop growing when the soil temperature reaches 30 ° C, it is difficult to form potato pieces; the growth process and nutrient absorption rate are fast; the demand ratio for nitrogen, phosphorus, and potassium is 2.2: 1 4.6; the total demand for fertilizer is large, the demand for nutrient elements is comprehensive, and it is sensitive to the lack of nutrients. Therefore, fertilization should be based on nutrient-rich organic fertilizers, supplemented by chemical fertilizers; sufficient base fertilizers should be applied as early as possible, and potassium fertilizers should be appropriately applied.