论文部分内容阅读
梨树黑胫病普遍发生于西北梨产区，造成幼龄梨树大量死株。该病病原菌为恶疫霉（Ｐｈｙｔｏｐｈｔｈｏｒａｃａｃｔｏｒｕｍ）。砧木的抗病性极大地影响病害的发生，杜梨、木梨（ＰｙｒｕｓｘｅｒｏｐｈｉｌａＹｕ）在田间表现抗病；田间管理不当的地面高湿及育苗、建园技术不当对病害的发生均有影响。在充分利用砧木抗病性的前提下，把握育苗、建园、灌水３个环节，能有效地控制病害发生；手术加药剂处理病部，有较高的治愈率。
Pear shrubs commonly occur in Northwest pear producing areas, resulting in a large number of young pear dead stocks. The pathogen is Phytophthoracactorum. The disease resistance of rootstocks greatly affected the occurrence of diseases, Pyrus xerophila Yu showed resistance in the field; improper field management of high humidity and nursery grounds, improper garden construction have an impact on the occurrence of diseases. Under the premise of making full use of the disease resistance of rootstocks, grasping seedling nursery, building parks, irrigation three links, can effectively control the disease; surgery and medicine treatment of the disease, a higher cure rate.