【摘 要】
:
Tobacco is an important cash crop in Pakistan. It is a sensitive plant prone to many bacterial, fungal, and viral diseases. It is also attacked by several speci
【机 构】
:
PCSIR Laboratories Complex Peshawar Pakistan,PCSIR Laboratories Complex Peshawar Pakistan,PCSIR Lab
【出 处】
:
Chinese Journal of Geochemistry
论文部分内容阅读
Tobacco is an important cash crop in Pakistan. It is a sensitive plant prone to many bacterial, fungal, and viral diseases. It is also attacked by several species of worms, beetles and moths. Therefore high levels of pesticides are used to grow tobacco. T
Tobacco is an important cash crop in Pakistan. It is a sensitive plant prone to many bacterial, fungal, and viral diseases. It is also attacked by several species of worms, beetles and moths. Therefore high of pesticides are used to grow tobacco. T
其他文献
题名作者 ·期·页 ·评论与综述·铝板带多机架热连轧工艺及罐料热轧………………………………………………………………周奕全张义斌王祝堂热加工工艺对鼬一Mg—si系合金型
黄初升教授!宣传部
Professor Huang Chunsheng Propaganda Department
去年汛期长江洪水长期居高不下,三峡坝址出现8次超过50000m3/s的洪峰,由于三峡工程防汛工作准备充分、标准明确、机构健全、职责清楚、措施得力,主体工程未受洪水及暴雨大的影响,
研制了内河中小型船用柴油机气阀磨削装置 ,优化了气阀磨削工艺 ,并对多种柴油机的进、排气阀进行磨削修复。检测表明 ,气阀锥面角准确 ,表面粗糙度可稳定达到Ra0 .4~ 0 .8μm
随着现代教育技术的日益现代化,多媒体信息技术已经成为现代教育技术的核心,在会计教学中,传统的教学方法已难以适应信息时代的教学要求,多媒体教学是众向所趋,是一体化教学
硬件木马成为近年来硬件安全领域的一个新威胁。硬件木马可能在集成电路设计的各个阶段插入到电路中,一经流片,就不可修复更改,将对通信和安全等领域造成巨大损失。针对时序
李嘉诚,1928年出生于广东潮州。1940年为躲避日寇的铁蹄,全家逃难到香港。为了养家糊口,李嘉诚被迫辍学走上社会谋生。开始,李嘉诚为一间玩具制造公司当推销员,由于勤奋好学,精明能干,不到20岁
丁肇中教授是蜚声全球的物理学大师。二○○○年六月,他第二次回到故乡山东省日照市。一
Professor Ding Zhaozhong is a world renowned master of physics. In June 2000
Biandansha, Qingcaosha and Meimaosha sands located respectively in the upper, middle and lower reaches of the Yangtze (Changjiang River) estuary are regarded as
Nitrate (NO3-) is a common contaminant of groundwater due to the intensive agricultural activities and special overfertilization. Nitrate itself is relatively n