At present, the input of chemical fertilizers in agricultural production has achieved remarkable results, but there are still irrationalities. The space for scientific fertilization development is still large, and the most prominent is the unreasonable proportion of nitrogen, phosphorus, and potassium fertilizers. The demand for nitrogen, phosphorus, and potassium in crops is relatively large. The ratio of nitrogen, phosphorus, and potassium in fertilizers is 1:0.39:0.22. The proportion of nitrogen and phosphorus tends to be reasonable, but the proportion of potash fertilizer is too low. Most farmers do not even know that crops need potassium fertilizer. Now the use of organic fertilizers, especially farmyard fertilizers, has decreased, leading to a serious shortage of potassium in farmland. According to the minimum nutrient law, the determination of crop yield is determined by the least effective plant growth factor in the soil. Therefore, in the absence of potassium, excessive application of nitrogen fertilizer and phosphate fertilizer can not increase production, but on the contrary will increase agricultural production costs and cause soil pollution. Different crops require different proportions of nitrogen, phosphorus and potassium. Under normal fertility, the demand for potassium by the crop is at the same level as nitrogen, even more than nitrogen (such as potato). At present, neglecting the application of potash fertilizer in agricultural production not only reduces the yield, but also increases the production cost due to the excessive application of other fertilizers, which affects the income and reduces the farmers' enthusiasm for production.
SS Precision Filters
Describe:
Precision filters (also known as security filters), the shell of the cylinder is generally made of stainless steel material, the internal use of pp melt-blown, line burning, folding, titanium filter, activated carbon filter and other tubular filter elements as filter elements, According to different filtration media and design process, different filter elements are selected to meet the requirement of effluent quality. It is used for solid-liquid separation of various suspensions, high environmental requirements and high filtration precision. It is suitable for pharmaceutical, food, chemical, environmental protection, water treatment and other industrial fields.
Characteristics:
(1) high filtration accuracy and uniform pore diameter of filter core.
(2) low filtration resistance, large flux, strong ability to intercept pollution and long service life.
(3) high cleanliness of Filter Material and no pollution to filter medium.
(4) chemical solvents such as acid resistance, alkali resistance.
(5) high strength, high temperature resistance, not easy deformation of filter elements.
(6) low price, low operating cost, easy cleaning and replaceable filter elements.
Applications:
It is used for solid-liquid separation of various suspensions, high environmental requirements and high filtration precision. It is suitable for pharmaceutical, food, chemical, environmental protection, water treatment and other industrial fields. Tank material can be divided into fiberglass can, carbon steel tank, stainless steel can, but also according to customer requirements.
Precision Filters,Ss Precision Filters,Stainless Steel Precision Filters,Flange Stainless Steel Precision Filter Henan Sinofiltec Technology Co.,Ltd , https://www.airfilters.pl
