Yangchun Jian should pay attention to ventilation and ventilation

Orchid pots should be ventilated, which is the experience that no one who raises orchids has ever ignored. But we must pay attention to ventilation when raising spring swords. A few years ago, I raised a large number of spring sword grass in the woodland planted with Phellodendron Phellodendri (a woody Chinese herbal medicine). At that time, because the canopy was narrow and the sun was easy to shine, although the sitting grass was dense, it was sterilized regularly and there was no disease. When the canopy is long enough to cover each other, the sun is reduced and the wind is blocked. Although the disinfection work has not stopped, "carbendazim" has been cross-used. "Topurazine" and "chlorothalonil" are sterilized regularly, and even "Dysen zinc" is used. Whenever it rains, the grass leaves still have serious black spot and soft rot, and they are so contagious that the whole leaves rot, making people laugh or cry. When I wake up from the pain, burn the diseased plant, transplant the disease-free plant around the yellow Berlin, and change its living conditions to meet the requirement of "both astigmatism and breeze", the disease of orchid plant is relatively reduced by more than 90%. Accordingly, we promptly investigate the ventilation conditions of orchids: keep orchid pots in indoor orchid pots with convection windows, keep the orchid frame flat with the windowsill, the orchid basin sits slightly higher than the day of the window, and ensure smooth air; orchid houses without convection windows, when asked during the period from "Lesser Heat" to "the End of Heat", but also regularly use a breeze fan to promote indoor cooling, orchid basin ventilation, treatment and prevention. For orchids planted on sporadic land and covered with vines, special attention should be paid to reducing the influence of surrounding objects and trees on air circulation, and creating a better temperature and humidity environment, shading environment and ventilation environment for orchid plants. in order to ensure that the orchid plant is disease-free and disease-free. (he Maosen / tr. by Robert Taylor)