What is potassium dihydrogen phosphate? How is potassium dihydrogen phosphate used?

What is potassium dihydrogen phosphate? How to use potassium dihydrogen phosphate? Also ask experienced netizens to help introduce that potassium dihydrogen phosphate is a common variety of chemical fertilizer in the agricultural material market. Potassium dihydrogen phosphate is widely used in almost all types of crops, such as cash crops, grain, melons, fruits, vegetables, and so on. Therefore, the farming network has sorted out the function and usage of potassium dihydrogen phosphate, which is listed in detail for netizens' reference. The function of potassium dihydrogen phosphate: potassium dihydrogen phosphate is a kind of quick-acting phosphorus-potassium compound fertilizer, which contains 22.8% phosphorus and 28.6% potassium. The pure product of potassium dihydrogen phosphate is white crystal, the solution is acidic, non-toxic, tasteless, non-volatile, non-deliquescent, stable, easily soluble in water, easy to be absorbed and utilized by plants, and is also an ideal foliar fertilizer. The dilute solution of potassium dihydrogen phosphate is often used for extra-root fertilization (foliar fertilizer) or as a nutrient solution for soilless and soilless cultivation. The use of potassium dihydrogen phosphate crops can achieve a good yield. Application method of potassium dihydrogen phosphate 1. Foliar fertilizer application: potassium dihydrogen phosphate is mainly used for extra-root fertilization of crops, especially for fruit trees and vegetables, and can also be used for extra-root fertilization of melons and wheat. Generally, the crop yield can be increased by about 10% by spraying 0.1%-0.2% potassium dihydrogen phosphate per mu with a concentration of 50-75 kg for 2 times in a row. The concentration was 0.3% on eggplant fruit vegetables, the spraying time was the first early flowering stage, the second time was in the early fruit stage, and the third time was carried out 7 days after the second spraying. The plant height, stem diameter, leaf number and flower bud number of tomato sprayed with potassium dihydrogen phosphate increased effectively, and the plant height, plant width, leaf length and branch number of pepper sprayed with potassium dihydrogen phosphate increased; the plant height and width of eggplant sprayed with potassium dihydrogen phosphate increased, and the leaves became longer, and the vegetables sprayed with potassium dihydrogen phosphate could also improve disease resistance. The suitable concentration of potassium dihydrogen phosphate spraying for crops: the concentration of rice sprayed once at heading stage, full heading stage and filling stage was 0.5%, and that of corn at pollination stage was 0.5%. The concentration of cotton sprayed once at bud stage, flowering stage and boll setting stage was 0.3% 0.5%, and the concentration of grape was 0.2% 0.3% at shoot growth stage and berry expansion stage. The concentration of watermelon is 0.2%-0.3% after each harvest. Second, used as seed fertilizer: potassium dihydrogen phosphate can be used as crop seed fertilizer, but the seeds need to be soaked in 0.2%-0.5% potassium dihydrogen phosphate solution for 18 hours for 20 hours before sowing. After that, it can be used as seed fertilizer when the crop is sown. Third, the use of seed dressing: use 1% 2% potassium dihydrogen phosphate aqueous solution to spray evenly on the seeds with a sprayer or sprayer, and sow seeds after a little air, about 10 kg per kg of solution. Fourth, use as dipping root: dip the crop root with 0.5% potassium dihydrogen phosphate aqueous solution. Matters needing attention in the application of potassium dihydrogen phosphate: first, the period of validity of spraying should be mastered when spraying with potassium dihydrogen phosphate. Generally choose in the peak period of phosphorus and potassium uptake by crops, such as the booting or heading and flowering stage of wheat and corn, before and after flowering of cotton, the tuber expansion stage of potato crops, and the pre-anthesis, post-fruit setting and fruit expansion stage of fruit trees. It should be sprayed before 10:00 and after 4pm on rainy days, morning dew and noon on sunny days. It can be sprayed all day on cloudy days. Note that potassium dihydrogen phosphate is usually used for topdressing, but foliar spraying is an auxiliary fertilization method, which must grasp the key point on the basis of sufficient base fertilizer in the early stage and good topdressing in the middle stage of the crop. timely spraying can achieve better results. Potassium dihydrogen phosphate can not replace the function of any other fertilizer. How to distinguish the function of potassium dihydrogen phosphate