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为防控早竹秆褐色条斑病,减少该病害对早竹产业造成的损失,笔者主要针对早竹秆褐色条斑病发病规律进行了研究。结果表明:早竹秆褐色条斑病发生的最适温度为20~25℃,温度低于5℃或高于30℃均不利于病害的发生;适宜的湿度和降水量利于病害的发生;病害流行的高峰期为5—7月。病原菌(芦苇节菱孢)孢子可在林地铺设的砻糠中越冬,通过气流或雨水飞溅传播,经过伤口侵染竹组织。铺设砻糠的林地病害率高于未铺设砻糠的林地;密林中早竹的感病指数比疏林中早竹的高;林缘早竹的感病指数高于林内早竹;早竹秆褐色条斑病在3年生和4年生早竹上发病较为严重。
In order to prevent and control the early bar streaked bar striped leaf spot and reduce the damage caused by the disease to the early bamboo industry, the author mainly studies the regularity of the incidence of barnyard grass streak. The results showed that the optimum temperature for the early occurrence of brown streak blotch in bamboo was 20-25 ℃, and the temperature was below 5 ℃ or higher than 30 ℃, which was not conducive to the occurrence of disease. The suitable humidity and precipitation were conducive to the occurrence of diseases. The popular peak is May-July. Pathogen (Spodoptera: Reichia sporida) The spores can overwinter in the woodland-deposited chaff, spread by air currents or rain splashes, and infect the bamboo tissue through the wound. The disease rate of woodland with bran was higher than that of wood without furfur. The susceptibility index of middle and early bamboo in jungle was higher than that of early bamboo in sparse forest. The susceptibility index of bamboo in early forest was higher than that in bamboo forest. Brown streak disease in the 3-year-old and 4-year-old early bamboo disease incidence is more serious.