论文部分内容阅读
奇异虉草为一年生禾本科植物,茎秆直立,基部膝曲,高30~120cm。叶舌长2~3cm,膜质,截头;叶片,长达15cm,宽3~5cm,线性,先端渐尖[1]。属外来物种,原产亚洲泛热带地区,现世界各大洲温暖地区均有,在我国分布于云南省,为外来种。近年来,在保山市大面积发现,据初步统计,2011年至2015年,发生总面积达10万hm~2。主要危害小春作物,特别是麦类作物。为摸清奇异虉草在麦田的方式规律、危害特点以及与大麦的竞争性,利用田间调查和盆栽进行试验,初步摸清保山市奇异虉草危害情况,为下一步防治奠定基础。
Strange grass is an annual gramineous plant, stalks erect, the geniculate knee, height 30 ~ 120cm. Leaf longest 2 ~ 3cm, membranous, truncated; leaf, up to 15cm, width 3 ~ 5cm, linear, apex acuminate [1]. Is a foreign species, originating in the Pan-tropical Asia, the world now warm in all continents are located in Yunnan Province in our country, as exotic species. In recent years, a large area of Baoshan City was found. According to preliminary statistics, from 2011 to 2015, a total area of 100,000 hm ~ 2 occurred. Harm small spring crops, especially wheat crops. In order to find out the pattern and characteristics of barleygrass in wheat field and its competition with barley, the field investigation and pot experiment were conducted to find out the damage status of the barleygrass in Baoshan, so as to lay the foundation for further prevention and treatment.