How to prevent frozen onion damage?

Posted on

1. Suitable period for planting: In the western part of Shandong Province and peninsula inland areas, planting from the end of October to the beginning of November can slow down the seedlings before winter and restore the growth of the roots, sending 3 to 4 new roots to form strong seedlings. The coastal areas of Qingdao, Weihai and Yantai in eastern Shandong can also be planted in spring, and they can be planted before and after the vernal equinox. 2. Spray Tianda 2116: After colonization of onion seedlings, use spraying 600 times times to reach 2116 drought-resistant and strong seedling-specific type, once every 10 to 15 days, and spray twice to promote hair roots and improve plant resistance to cold and disease. And adaptability to prevent freezing damage from occurring. 3. Strengthen pre-winter management: First plant the seedlings with water after planting, and after 2 to 3 days, carefully scratch the roots to promote root growth. Before winterization, it is necessary to water the overwintering water again. Afterwards, the water shall be carefully smashed and the soil shall be used to push the fine topsoil to improve the ground temperature and protect the earthworms. The earth shall be excreted with earthworms, wheat stubble, comminuted grass, etc. or covered with plastic film to ensure safe wintering. .

Fluorine-Containing Benzaldehyde

Most products of Fluorine-Containing Benzaldehyde are a pale yellow liquid. They are playing an important role in fine chemical intermediates, is used as the main raw material for the synthesis of a variety of pesticides, pharmaceuticals, surfactants, polymer monomer mildew. As used in medicine synthesis antihypertensive drugs, antipyretic analgesic anti-inflammatory drugs, anti-cancer drugs, muscle relaxation drugs for synthesizing fluorine cypermethrin, fluorine chlorobenzene daisy cool in pesticides, fluoride and styrene, wherein the polymer of styrene monomer to fluorine can be widely used in the manufacture of the recording material, a thermoplastic resin coating, liquid crystal materials. Currently new miticide is effective pesticide products which is the main raw material of Fluorine-Containing Benzaldehyde.


Containing Benzaldehyde,5-Dichlorobenzaldehyde,3-Bromo-5-Fluorobenzaldehyde

Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com