The roots of orchids are blackened.
There are many kinds of orchid root blackening, and can not be a unilateral judgment of what causes, flower friends can refer to the following information to judge.
1. The part of the leaf connecting the bulb is generally called the leaf base or the leaf sheath. If the leaf sheath is blackened, it indicates that the stem rot caused by bacterial infection must be taken seriously. Agricultural chloramphenicol, streptomycin or carbendan 2000 times solution can be used immediately to spray, irrigate the leaf base and corm. Or choose the universal agent 70 Stem Curin EC.
Usage: use 600 times of the medicine (the dosage can be determined according to the number of orchids) 7 Mel once every 10 days, spray 4 times in a row, and then spray once every 20 days according to the situation; in the high temperature period from April to October, the drug is used for prevention.
2. If the root is blackened, it is mostly caused by large water and poor air permeability of the plant. Most of this situation is caused by improper management. Flower friends can investigate from many reasons, such as water responsibility, fertilizer damage, improper use of water (pH, polluted water), improper proportion of plant materials, and so on.
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Yang's Cui Mei Chunlan
In March 1994, Jiangsu Liyang Lanyou Yang Hanqi visited Zhoushan, Zhejiang Province and selected it at the top of the mountain. From 1995, that is, every year, the flower shape is stable. In March 1998, the East China Orchid Exhibition won the excellent New Variety Award and was named "Yang's Cuimei". The new teeth are mercury-red, and the leaf sheath gradually turns purplish red when picking leaves. The adult leaves are about 30cm in length and 1cm in width. The leaves are thick.
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Fixed margin Mei Chunlan
Flower art: history of plum petals: Mr. Wan Yunkun gambled at the flower market stall in the square during the 16th (Guiyang) Orchid Expo on February 19, 2006. Mr. Liu Yongfu, a native of Yezhong Township, Shuicheng County, Liupanshui City, Guizhou Province, is located in Wanshan County, Tongren City, Guizhou Province (near the mountains near Guangxi, Hunan and Chongqing).
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