Summer sesame seedlings season coincides with high temperature and rainy season, with less roots and weak growth. However, weeds are unearthed quickly, with high density and strong growth, and it is easy to cover the sesame seedlings to form grassland. The corresponding herbicides should be used at different times for removal.
There are many kinds of products which need filtration in industrial production. The material properties of these products are very different, and the purpose of separation is different. Therefore, it is necessary to select the filter equipment scientifically and reasonably according to the production needs such as material characteristics and separation purposes, in order to play its role effectively.
At present, the requirement of filtration equipment in industry is that the filtration accuracy is high, so that the solid content in the filtrate is low, and even the filtration precision is based on the number of solid particles in the filtrate.
In order to ensure the stability and reliability of the system, the cleanliness of the oil with precision components such as servo parts is strictly controlled in the international hydraulic system, and the new oil cleanliness is required to reach the fifth grade of the American Aerospace Standard nas1638 (American Aerospace Standard), so as to ensure the stability and reliability of the system. But in reality, the cleanliness of new oil is only 10-11 of nas1638. If the new oil is used without strict filter and purification, it will bring serious harm to the life of the precision components and the reliability of the work of the whole system. The cleanliness of hydraulic oil can be improved fundamentally only when circulating filtration is carried out simultaneously with the operation of hydraulic system.
Reverse osmosis filtration equipment is widely used in industrial production, industrial pure water system is designed from reverse osmosis process, referred to as reverse osmosis equipment. The water quality of reverse osmosis equipment is required before influent. If the water flow through reverse osmosis membrane directly through high pressure for a long time, it will cause membrane blockage.
In general, there are multi-medium filters, ion exchange, various kinds of precision filters in the pre-treatment equipment of the whole pure water system. These pre-treatment filters can effectively remove the suspended matter in the water.
According to the needs of the users, different levels of processes are used to make the quality of the produced water up to the standard. Of course, its price is also determined by the configuration of reverse
osmosis equipment.
Filter Equipments,Industrial Filter Equipments,Air Filter Equipment,Stainless Steel Filter Equipments Henan Sinofiltec Technology Co.,Ltd , https://www.airfilters.pl
First, the closed soil before seedling treatment. After sowing with sesame seed, use 50% acetochlor EC 100ml or dole (72% metolachlor EC) 200ml water and 50kg evenly to spray, which can control green foxtail, crabgrass, maiden, goosegrass, etc. A variety of annual grass weeds also have certain control effects on broad-leaved weeds that are propagated by a variety of small seeds. Keep the soil moist after the medicine. It is not suitable to loosen the soil in 50 days to avoid destroying the soil layer.
Second, the use of herbicides. Summer weedy field weeds generally emerge 3-10 days earlier than sesame seeds, and grow rapidly, can fully use this period of time before the emergence of sesame, use paraquat to control unearthed weeds, with 20% paraquat per acre agent 200 Add 40 kg of water to the spray. The drug is a contact-killing herbicide that can be quickly absorbed by the plant leaves after the drug, so that photosynthesis and chlorophyll synthesis are quickly terminated. The leaves begin to change color within 2-3 hours after the drug is applied, but they cannot be transmitted, and therefore can only be affected. The drug is partially victimized. The contact between the drug and the soil is inactive and has no residue, and has no effect on the emergence of sesame.
Third, after the emergence of selective herbicides. After the emergence of sesame, weed 2-3 leaf stage, can be used per acre with refined grass gram (5% quizalopyr EC) 70-100 ml or fine stable to kill (15% fluazifop-mercury) 50 Add 40 kg of water to the spray. 4-5 days after the drug, the symptoms of weeds appear yellow and internode browning poisoning. After 7-8 days, the whole plant died. The main prevention and control of wild oats, crabgrass, goosegrass, Acacia, Setaria, Qianjin, etc. Annual grass weeds.
