Urea is used as a top dressing, which is better than other nitrogen fertilizers. However, be sure to pay attention to the following issues when spraying: First, do not spray in hot weather or before rain, so as not to burn seedlings or lose fat. The spraying time is preferably carried out every morning or afternoon, and sprayed again after spraying for 7-10 days. 2. When spraying cereal crops or crops with smooth foliage, add 0.1% of adhesive (such as washing powder, washing and cleaning). Otherwise, the effect is not good. Third, the urea used for spraying, the content of biuret can not be higher than 0.5%, high content for top dressing is easy to damage the leaves. Fourth, different crop types, the concentration of urea solution required to spray is also different, generally cereal crops require a spray concentration of 1.5-2%, when spraying at the flowering stage, the concentration is lower. The spraying concentration of vegetables and cucumbers of leafy vegetables is 1-1.5%. Apples, pears, grapes and other fruit trees are preferably 0.5%. Tomato is preferably 0.3%.
For over 100 years, AKH Die Casting has been dedicated to providing companies with superior die casting and tooling, along with metal finishinig and CNC MACHINING AND Grab Bar through state of the art machinery and processes. Specializing in ALUIMNUM and ZINC ALLOYS, engineers and production staff will develop a high pressure die casting process that will produce your parts economically and with reliable quality
NINGBO AIKEHAN continues to invest in state of the art machines and technology to provide process consistency, precision, and reduced labor. Combining automated process monitoring and an expert staff of process technicians means we can quickly detect process issues and correct for out of control variables.
Utilizing a licensed vacuum system, we improve the surface finish and integrity of our castings and molds, ensuring our clients receive only the highest quality work from the Premier team.
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Aluminum Die Casting Parts,Aluminum Led Housing,Aluminum Heatsink Profile,Extruded Aluminum Heatsink NINGBO AIKEHAN METAL PRODUCT CO.,LTD , http://www.diecastingsupplier.com
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