毕业设计论文-观赏草坪主要病害发生特点及综合控制对策 .docVIP

2015届 　　 　　 　 分 类 号： 　　　　　　 单位代码：10452　　　　　　　　　　　 毕业论文 观赏草坪主要病害发生特点及综合控制对策 姓 名 学 号　 201112860222 年 级　 2011 级 专 业 园 林 系　（院） 生命科学学院 指导教师　 二〇一四年十二月 观赏草坪主要病害发生特点及综合控制对策 Ornamental grass main disease epidemic characteristics and the comprehensive control countermeasures 姓 名 专 业 园 林 指导教师　 临沂大学 二〇一年月 ABSTRAT Ornamental grass set viewing, dust, and beautify the living space and integration, more used in residential areas, parks, street road, square.requires the lawn close, color green, green period is long. Grass has a Kentucky bluegrass, Poa annua L. Lolium perenne L. Linn Pers.Festuca elata Keng ex E. Alexeev Agrostis matsumurae Hack. ex Hondaetc. ext. But because the lawn industry started relatively late in our country, introduced from abroad a large number of species, imperfect cultural practices and extensive management after planting, coupled with the domestic some areas not suitable climatic conditions, many by fungi, bacteria, viruses, nematodes, the original body caused by pathogens such as ornamental lawn plant diseases and insect pests occur extensively, which seriously affects the lawn overall ornamental value, reduces the fixed number of year of the turf quality and available. To find out the main types of the ornamental lawn diseases and insect pests occurrence, damage characteristics and occurrence regularity, on the basis of consulting a large number of literature about lawn diseases, adopt the method of survey combined with a focus on investigation, the occurrence rules of several common ornamental lawn disease