From cropping to harvesting, the nutrients absorbed are relatively fixed, and there is a certain proportion between the various nutrients. Whether it is the total amount of fertilizer too much, or too much a certain amount of nutrients applied to crops grown are no good, and wasteful.
Excessive application of fertilizers, especially chemical fertilizers, can result in excessive nutrient concentrations in the soil solution, which is detrimental to seed germination. High nutrient concentrations will burn seed, seedling injury, crop growth was inhibited, just as the same species on the high salinity soil salinization. In the crop growth period, excessive application of nitrogen fertilizer will cause crops to appear lengthy, greedy and late-maturing, easy to fall and incur pests and diseases , eventually leading to an increase in openness, a decrease in 1000-grain weight, and a decrease in yield. Excessive application of phosphate fertilizer is also unfavorable for crop growth. Not only is the vegetative period shortened, the maturity period is advanced, premature aging occurs, and it is easy to cause deficiency of nutrients such as zinc, iron and magnesium , which affects crop quality. Excessive application of potash or trace elements is also unfavorable for crop growth.
Therefore, the fertilizer is not applied as much as possible. Shi more, not only a waste, and while the damage to the crops.
Resin bond is a kind of organic bond, the grinding wheel made of this bond has high strength, has certain elasticity, low heat resistance, good self-sharpening, easy production and short process cycle. It can manufacture Grinding Wheels with working speed higher than 50 m/s and very thin grinding wheels. Its application range is second only to ceramic binder, widely used in rough grinding, waste grinding, cutting and free grinding, such as grinding steel ingot, casting burr etc.. Can manufacture high speed, high finish grinding wheel, heavy load, cutting and various special requirements of grinding wheel.
In tool grinding, the cutting tool materials with high hardness, thermal hardness, wear resistance and enough strength and toughness, such as carbon tool steel, alloy tool steel, high speed steel, hard alloy, etc., are grinded with resin strong grinding wheel to achieve ideal accuracy. The surface roughness and correct geometry make the cutting edge have high sharpness and durability
Saw Blade,Brazing Diamond Saw Blade,Diamond Key Chain Saw Blade,Abrasive Paper Grinding Sheet
Henan Jinlun Superhard Material Co., Ltd , https://www.jinlunsuperhard.com