![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Celery is rich in nutrients such as protein, carotene and B vitamins and is popular among people. But pests and diseases cause their quality to decline, affecting its value. The pesticide network Xiaobian collects relevant disease prevention and control skills to share with you:
The celery is threatened by insect pests. The celery early blight is commonly known as spot disease. It usually occurs most in cold and humid environments. It affects the main diseases of high quality and high yield of celery. It should promptly prevent and control the occurrence of diseases and increase production and income.
The celery is infected with insects. It should be noted that the celery pests should be sprayed when the celery seedlings are 3 cm high. Spray once every 7-10 days and spray 2-3 times. In the greenhouse disease period, pesticide manufacturers recommend using 45% chlorothalonil aerosol, 200-250 grams of smoke per mu, or 5% chlorothalonil powder, 1000 grams per acre, convenient for application, and can reduce the shed humidity. Spraying agent can also choose 70% mancozeb wettable powder, 58% toxic manganese-zinc wettable powder, 64% anti-virus WP, 75% chlorothalonil WP, 50% carbendazim wettability Powder, etc.
For the diseased strains, it is necessary to remove them in time to prevent the spread of the bacteria sources remaining in the diseased plants, and to strengthen ventilation and reduce humidity. The Chinese pesticide network recommends spraying the vegetable stalk and stalk spirit in the celery growing season, which can make the celery stems thick and the leaves thick and fresh, thus improving the disease resistance of celery pests.
1. Product introduction
Coal-based Column Denitrification Column Activated Carbon is cylindrical black particles. It has many characters, such as high porosity, high sulfur capacity, high desulfurization efficiency, large surface area, light weight, strong adsorption capacity, wear resistance, good water resistance, low air resistance, easy regeneration, not easy to break under high pressure etc. It is a commonly used in adsorbent.
2. Adsorption purification principle and process
Coal-based denitrification Activated Carbon is divided into large pores (pore size greater than 50nrrt), the middle hole (pore size between 2 ~ 50nm) and micro-pore (pore size less than 2nm) three categories.
The denitrification activated carbon is by active carbon`s adsorption and catalytic activity of activated carbon. The strong catalytic effect of the active carbon for sulfur dioxide in gas, and a small amount of Oxygen in the oxidation reaction, the reaction of elemental S adsorbed the surface of activated carbon. When activated carbon desulfurization agent the adsorption reaches saturation, the desulfurization efficiency decreased obviously, it must carry on the regeneration. The regeneration of active carbon adsorption depends on the material, sulphur began to melt under atmospheric pressure is 190 degrees, 440 degrees Celsius will sublimate into gas, therefore, the general use of superheated steam temperature of about 450-500 degrees Celsius for the regeneration of activated carbon desulfurization agent. When the desulfurization agent reach high temperature, the elemental sulfur separate out activated carbon, the precipitation of sulfur into sulfur recovery pool, water cooled to form solid sulfur.
Column Denitrification Column Activated Carbon
Column Denitrification Column Activated Carbon,Activated Carbon,Biochemical Activated Carbon,Black Amorphous Activated Carbon
Ningxia YiFeng RuiDa Activated Carbon Co.,LTD , https://www.nxyfrdhxt.com