Product Dimesnion: 6.18" x 4.13" /15.70cmx10.50cm
Mask Fabric Material: 5-ply material,100% polypropelyne
Ear Loop Material: 70% polyamide, 30% elastane
when to use: suitable for adults to use daily in a variety of settings
such as home, outdoors and work
packaging: 5 pcs of mask in one sealed printed plastic bag to ensure
hygiene or 10pcs per box
certification/standard: GB2626-2006(China KN95 standard) and FDA
registered
about the manufacturer: Kapanou is china-based healthcare company
KN95 Face Mask,FDA GB2626-2006 KN95 Mask,White List KN95 Mask,5 Ply KN95 Face Mask Ningbo Debeida Science&Technology Co.,ltd. , https://www.dbdmask.com
Is there any way to quickly relieve soil alkali damage
Some deep wells have high saline-alkali content and should not be used to irrigate farmland, otherwise the saline-alkali content in the farmland will be too high. The above farmland should not continue to be irrigated with water containing high amounts of saline and alkali. The method of sulfur application can eliminate soil alkalinity quickly, but the improvement cost is high. Judging from the situation reflected, farmland is less polluted by salt and can be relieved by the following methods. When paddy rice is grown, it can be treated by irrigating salt and alkali that does not exceed the standard saline-alkali content. After a while, the saline-alkali content of farmland soil will decrease. The application of organic fertilizers, such as increasing the manure of livestock and poultry such as pigs, cattle and sheep, and returning the straw to the field, the organic matter in the process can release acid substances during the decomposition process, and eliminate the alkaline substances in the soil to a certain extent; the soil organic matter After the content is increased, its buffer capacity is enhanced, which is conducive to the continuous relief of soil salt and alkali hazards. Pay attention to the application of physiological acid fertilizers such as potassium sulfate during fertilization, which will also help reduce alkali damage. Rice usually enters the period of spike differentiation after jointing and has increased sensitivity to the outside world. Especially in the period from booting to heading, it is most sensitive to external environmental conditions. To avoid salt and alkali damage during these periods, care should be taken according to farmland. Saline-alkali soil, timely irrigation and drainage salt and alkali to avoid long-term dehydration. Do not put too much weight on the side of the field, and do not put water in the field for a long time, otherwise it may increase the salt and alkali hazards. In terms of production, basic seedlings can be appropriately reduced, and the population can be controlled from the head to the stable development, so as to avoid the forced control of the population through the method of repetitive cropping.