Foliar fertilizer is popular among farmers because of its small dosage, good effect, quick effect and convenient application. We all know that spraying foliar fertilizer can not only regulate the nutrition of crops and prevent and cure diseases, but also improve the utilization of fertilizers and ensure the growth and development of crops. However, there are also many farmers who do not have a good grasp of the points of foliar fertilizer, which leads to the effect of fertilizer effect is not obvious, and even fat damage, then today Xiaobian will tell you how to properly apply foliar fertilizer. 1. It is necessary to choose fertilizer There are many types of fertilizer that can be sprayed on the foliar surface, and farmers can determine the appropriate fertilizer based on the lack of nutrients in the crop. For example, if nitrogen is deficient, 0.3%-0.5% urea solution can be sprayed; when phosphorus is deficient, 1% ammonium phosphate solution can be sprayed; when potassium is deficient, 0.4% potassium nitrate or 0.3%-0.5% potassium dihydrogen phosphate can be sprayed; calcium deficiency 0.3%-0.5% calcium nitrate solution or 0.3% calcium hydrogen phosphate solution can be sprayed at the new leaf stage of the crop; 0.1%-0.2% magnesium sulfate can be sprayed at the new leaf stage of the crop during magnesium deficiency. 2, spray concentration should be appropriate The concentration of different foliar fertilizers is different, the concentration is too low, the concentration is too high, the stems and leaves will be damaged, and the foliar spray fertilizer should be flexibly controlled according to the specific conditions to prepare a suitable concentration. Appropriate increase in solution concentration is advantageous for absorption without causing damage. When a variety of fertilizers and pesticides are mixed, the concentration should be reduced proportionally. Spraying in the spring, the concentration can be slightly higher; spraying in summer and autumn in high temperature and dry season, the concentration should be appropriately reduced. 3, spraying time should be appropriate The effect of spraying is affected by temperature, light intensity, rainwater, etc., avoiding the noon at noon to avoid the absorption of fertilizer due to rapid evaporation, and it is not advisable to spray foliar fertilizer before rain to prevent the fat from being lost by rain. Spraying is best carried out in the windless cloudy days and sunny days, and the leaves are wet for a long time after spraying, which is beneficial to absorption and improve fertilizer efficiency. 4, the number of spraying should be appropriate Nitrogen and potassium fertilizers are transported quickly by the leaf surface, and can reach the various parts of the crop faster, and can be sprayed once in the critical period of fertilizer requirement. Phosphate fertilizer and other trace elements move at a slower speed. Generally, it should be sprayed 2-3 times, and it can be sprayed once every 7-10 days to exert a good fertilization effect. The mobility of trace elements iron and calcium is even worse. It is better to spray iron-containing fertilizer 3-4 times, and it should be sprayed once every 5-7 days. 5, the spraying site should be suitable The young leaves of the crops and the larger leaves of the leaves are thinner, and the nutrient absorption is easier. The absorption capacity of the young leaves is stronger than that of the old leaves. There are many stomata in the leaf back, and there are many cell gaps. The absorption nutrients are faster than the leaf surface, and the absorption capacity is stronger than the leaf surface. Therefore, spraying on the young leaves is the best, and it is best to spray the leaves back. The above is the correct method of spraying foliar fertilizer. Foliar fertilization can make nutrients directly enter the body from the leaves, participate in the metabolism of crops and the synthesis process of organic matter, so it is more rapid and effective than soil fertilization, often as a timely treatment of crop defects. The main measures of the disease. However, Xiao Bian reminds farmers that they must correctly master the above fertilization methods and avoid unnecessary losses. For the wonderful pictures and popular comments on spraying foliar fertilizer, you may be interested in the following recommended contents of Hui Nong. Welcome to read. Teeth Whitening Machine,Desktop Model Tooth Light,Teeth Bleaching Machine ,Dental Teeth Whitening Machine Foshan Ja Suo Medical Device Co., LTD , https://www.fjoralinstrument.com.jpg "What is the role of spraying foliar fertilizer? How to properly fertilize?")
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