小麦全蚀病的发生规律及综合防治技术

来源 :农业与技术 | 被引量 : 0次 | 上传用户:liyazhou
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
近年来,小麦全蚀病在宁晋县发生面积不断扩大,给小麦安全生产造成了一定威胁。针对该病传播速度快、危害性大、难以根除的特点,连续3a对该县小麦全蚀病的发生及危害状况进行了系统调查,了解该病的发病症状、规律、影响因素,并在综合防治技术上进行了探讨。
其他文献
Background: HIV infected persons are at risk for opportunistic illnesses based upon severity of immune deficiency. Management is generally based upon the most r
Introduction: Despite the success derived from antiretroviral therapy, drug resistance (DR) mutations are known to develop and are major impediments to treatmen
Background: Percutaneous coronary intervention is now the best way of management of acute coronary syndrome (ACS). Contrast induced nephropathy is a serious com
In Cameroon, despite extensive control efforts against HIV/AIDS, the number of new HIV infections is still on the rise. The factors contributing to this are not
A longitudinal analytical and comparative study including outpatients was carried between June 1st?and December 31st?2017. The objectives were to determine the
米波雷达发射机(以下简称发射机)是一个机、电技术有机结合的产物。它有着功率大,频率稳定度要求高的特点。其良好的电磁兼容和热设计是它正常工作不可缺少的因素,也是保证发射机
本文针对辣椒疫病发生及防治措施进行研究和分析,希望对辣椒种植尤其是对贵州黔南的辣椒种植起到更大的帮助作用。
Background: With the improved lifestyle of people, the incidence of coronary artery disease is gradually increasing. Approximately 15% - 20% of patients undergo
介绍了福州长乐市拉丁酒吧“1·31”重大亡人火灾事故的调查认定过程,首次将灾害成因调查纳入火灾原因调查,为依法追究有关责任人责任、总结火灾事故教训提供依据,也为今后
本文介绍气动升降天线杆的主要部件中心杆的设计计算,包括中心杆风负荷,扭转角计算,危险截面的强度计算,结构稳定性分析计算以及气泵升力,升降时间的计算和钢丝绳所受拉力的