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茄子褐纹病是茄子的重要病害,叶、茎、果都受害。叶片发病初期,出现水渍状圆点,扩大后呈深褐色,上面出现轮生小黑点,病斑易破裂穿孔。茎上病斑近棱形,中央灰白色,边缘深褐色,生有黑色的小点,病斑逐渐脱落露出木质部。果实病斑开始淡黄色稍凹陷,逐渐扩展到整个果实,呈褐色,病斑表面也生许多小黑点,排列成明显的轮纹。 主要防治方法:(1)选用抗病品种。(2)从无病田或无病植株上留种。(3)播种前用55℃温水浸种15分钟,或用250倍福尔马林液浸种10分种,然后用冷水洗净。(4)用大田土做苗床床土,育苗播种时用五氯硝基苯药土处理床土。
Eggplant brown spot disease is an important disease of eggplant, leaves, stems, fruits are victims. Early onset of leaves, water stains appear like dots, dark brown expanded, there are round black dots on the above, easy to rupture perforation. Stems near the prismatic lesion, the central gray, dark brown edge, born with black dots, spots gradually shedding xylem. Fruit lesion began to light yellow slightly depressed, and gradually extended to the entire fruit, brown, spot lesions also gave birth to many small black spots, arranged in a clear pattern of round lines. The main control methods: (1) use of resistant varieties. (2) Leave from the disease-free or diseased plants. (3) soaking in warm water at 55 ℃ for 15 minutes before sowing or soaking in 250 times of formalin for 10 minutes, then wash with cold water. (4) field soil seedbed bed to do nursery seedling with pentachloronitrobenzene soil treatment of bed soil.