温州蜜柑异常落果分析及预防措施     

王增耀  唐谱俐等 《广西气象》1990,11(2):45-45,49

经试验研究分析得出：引起兴安县温州柑异常落花落果是五月高温的危害。在高温出现时及时喷“九二0”和及时抹去春梢营养枝，就可提高座果率，达到稳产高产。  相似文献   

Enveloping Relief Surfaces of Landslide Terrain     

A.K.Pachauri Abhirup Chatterjee Reeta Gaur 《山地科学学报》2007,4(3):203-208

Two relief surfaces that envelop the rock fall region in a part of Garhwal Himalayas around Chamoli have been identified. Relative relief and absolute relief have been analyzed and the enveloping surfaces recorded at two levels of relief in the landscape. All landslide activity lies within these surfaces. The lower enveloping surface (800 m) dips due south by 7-8 degrees,due to an elevation rise of 100 meters within 12 km from south to north,i.e.,a gradient of 8 percent. The nature of the surface is smooth. The upper enveloping surface (> 2500 m) is almost parallel to the lower one but its surface is undulatory due to landslides and denudation. The area has been a seismically active region and has undergone seismic activity up until recently,as evidenced by the Chamoli earthquake of 29th March 1999. The effects of earthquakes are seen at higher levels in the form of landslide imprints on the terrain.  相似文献   

动态CPS（RTK）测量的精度分析     

崔晓波 《中国地名》2009,(12):66-67

本文总结了影响动态GPS（RTK）精度的原因及解决方法。分析研究表明,动态GPS（RTK）测量平面精度可达到一级导线测量的要求,高程精度可达到等外水准的要求。  相似文献   

肥城煤田断层突水及防治方法   总被引：1，自引：0，他引：1  

王则才 《煤田地质与勘探》2005,33(Z1):86-88

肥城煤田主采煤层为石炭系太原组,煤层下距徐家庄灰岩间距小,工作面回采过程中,遇到小断层经常发生底板突水.本文重点分析了断层的突水特征、易发生突水的部位及突水机理,提出了断层突水的防治措施.  相似文献