论文部分内容阅读
凤山县地处桂西北山区,云贵高原南缘。境内山多地少,是一个以玉米生产为主的喀斯特山区农业县。2014年全县玉米播种面积7.6万亩,其中春玉米播种面积2.9万亩,占玉米播种总面积的38。2%。2014年凤山县春玉米平均亩产较低,其原因除了受品种、密度、施肥等因素影响外,还与在当地春玉米上流行为害的纹枯病有关。纹枯病。当地农民称之为“烂脚病”或“花秆病”。该病除在春玉米苗期发生较少外,生育中期、后期通常发病较重。春玉米受害后
Fengshan County is located in the mountainous area of northwest Guangxi and the southern edge of Yunnan-Guizhou Plateau. The territory of mountainous and less, is a corn-based agricultural production karst mountain county. In 2014, the county sown corn area of 76000 acres, of which 290000 acres of spring corn sown area, accounting for 38.2% of the total area of corn sown. The average per mu yield of spring maize in Fengshan County in 2014 was lower due to the influence of species, density, fertilization and other factors, and also to the sheath blight disease that was endemic to local spring maize. Sheath blight. Local farmers call it “rotten foot disease” or “stalk disease”. In addition to the disease occurred in spring maize seedling stage less, mid-term reproductive, late onset usually heavier. After the spring corn victims