How to apply micro-fertilizer to grow sesame?

How to apply micro-fertilizer to grow sesame? Please give guidance to the main trace elements needed in the process of sesame growth and development, such as boron, zinc, manganese, iron and so on, but the absorption amount is different in different growth stages, the absorption rate is slow in the seedling stage, and the accumulation quantity is small; from flowering to capping stage, the absorption rate is fast, and the accumulation quantity is large; from capping to maturity, the absorption rate slows down and the accumulation decreases. However, different elements also have their own characteristics. Zinc is absorbed the most during the capping period, and manganese fertilizer is absorbed most quickly after flowering. In the whole growth and development process of sesame, iron is the most, boron is the second, zinc is the third, and manganese is the least. According to the current soil laboratory analysis in our city, there is an extreme lack of zinc, molybdenum, manganese and boron in the soil of our city, which is bound to affect the growth and development of crops. Boron fertilizer is usually used in different micro-fertilizer application techniques, such as basic application, topdressing and seed application. As base fertilizer, 0.5-0.7 kg per mu is generally applied, seed dressing is generally 0.4%-0.6% of the seed amount, the concentration of seed-soaking liquid fertilizer is 5%, and the seed-soaking time is 20-24 hours. Extra-root topdressing should be sprayed 2 times 3 times from early flowering to full flowering, the concentration is 0.1% 0.2%. Zinc sulfate is commonly used for zinc fertilizer, 1kg per mu and 4kg / kg for seed dressing. If foliar spraying, the concentration is 0.1%-0.5%, the effect of spraying is better at the bud stage, that is, 25-30 days after emergence. Manganese fertilizer is often used manganese sulfate, manganese fertilizer should be applied early, if manganese fertilizer is applied in the middle and later stage, it is difficult to correct manganese deficiency. Generally, 0.5kg / mu is applied at the bottom and 6g / kg of manganese sulfate is used for seed dressing. The effect of foliar spraying liquid fertilizer was better at 7-10 days before budding. Iron fertilizer is mainly ferrous sulfate, and foliar spraying is suitable for the application of iron fertilizer, with a common concentration of 0.1% to 0.5%. In order to improve the effect of foliar fertilization, firstly, the suitable times of spraying fertilizer were determined, the general trace elements were sprayed for 2 times and 3 times, and the interval was 7 days. Secondly, choose the appropriate time to spray fertilizer, it is best to choose cloudy days to spray, if the sunny days should be sprayed before 9: 00 a.m. when there is no wind, or after 4: 00 p.m. Third, add the necessary adhesive and add a small amount of washing powder to the prepared fertilizer solution as an adhesive. However, be careful not to add alkaline washing powder. The addition of organic substances such as acetone and ethanol can also reduce the surface tension of the fertilizer solution, increase the leaf contact area and improve the fertilizer efficiency. In addition, several trace elements had better not be sprayed together, so as not to reduce the fertilizer efficiency. Click to get more sesame planting techniques click to get more food crop planting techniques