Symptoms of mulberry leaves, which are severely poisoned by fluoride, appear brown, and the polluted brown margin expands inward. Etiological fluorine pollution is often caused by the emission of excessive amounts of fluorine-containing exhaust gas such as hydrogen fluoride and silicon tetracyano-chloride during the production process in brick and tile factories, cement plants, phosphate fertilizer plants, and steel-making plants. According to the determination of mulberry leaves containing more than 200mg/kg fluoride, prone to fluoride poisoning. When the dry matter content of mulberry leaves is more than 30mg/kg, it can also cause silkworm poisoning. The difference between the taste of purple Onion and yellow onion Onion Minced Red Onion,Storing Red Onions,Onion Rate In Reliance Fresh,Pre Chopped Onion Jining Yuanheng International Trading Co.,Ltd , https://www.china-garlic-exporter.com
Prevention and control methods Select the mulberry garden address, do not plant mulberry in the industrial pollution area. Do not set up brick and tile factories and industrial and mining enterprises that emit industrial waste gas near Mulberry Park.
Purple onions and yellow onions also have a big difference in taste. Purple onions have a lighter spicy taste and a slightly sweet taste. They can be eaten raw, but the yellow onions are particularly spicy. They cannot be eaten raw and are suitable for frying. Eat after making or making soup. In addition, the purple onion has relatively thick flesh and high juice content, while the yellow onion has very thin flesh quality and low juice content.