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黄连白粉病Erysiphe polygoni D.是由子囊菌引起的一种黄连叶部病害,起初呈块状灰白斑,有粉状物,严重时叶片出现水渍状暗褐色斑点,甚至凋萎干枯,在于燥、过度荫蔽及有风条件下传染迅速,致使黄连大幅度减产,是黄连生产中主要病害之一.在产区对于此病的防治,一直采用调节荫蔽度,注意排水,喷洒农药等,但对农药的防效未作研究.为此我们进行了此项试验,报道如下.
Yellow Coptis powdery mildew Erysiphe polygoni D. is caused by ascomycetes a Coptis leaf disease, initially as a block of gray-white spots, powdery, severe water stain when the leaves appear dark brown spots, or withered dry, dry , Excessive shade and windy conditions, rapid transmission, resulting in a substantial cut Coptis chinensis production is one of the main diseases in the production of Coptis for the prevention and treatment of the disease in the producing areas, has been used to adjust the degree of shade, pay attention to drainage, spraying pesticides, etc. However, Pesticide control effect is not studied .To this end, we conducted this test, reported as follows.