卫星平地与激光平地作业效果、效率及效益对比研究

Comparative Study on Effects,Efficiency and Benefits of Satellite Leveling System and Laser Leveling System

平地作业是实现水稻田节水的有效措施,本研究探索了3种天气状况下卫星平地系统与激光平地系统的作业效果、效率及效益差异。研究结果表明:当平地前各测点标高标准差相差不大时,在晴朗无风、阴天不下雨天气状况下,激光平地系统与卫星平地系统作业效果无差异;而在能见度小于300m的刮风天气状况下,卫星平地系统正常作业,激光平地系统无法作业。卫星平地系统在上述3种天气状况下,作业成本较晴朗无风天气状况下的激光平地系统(CK)减少144.8元/hm2以上,1台班净收益13762.9元以上,较激光平地系统(CK)增收4190.1元以上,增效42.4%以上,增效明显。

It is effective to use the leveling system to realize water conservation in paddy fields.In this paper,the effects,efficiencies and benefits of satellite leveling system and laser leveling system were compared and explored under three kinds of weather conditions.The research results indicated that when the differences in standard deviations of the elevations of each point were not obvious before leveling,there were no differences between the effects of satellite leveling system and laser leveling system on sunny and calm conditions or cloudy weather conditions.When the visibility was less than 300 m on windy conditions,the satellite leveling system could work normally,while the laser leveling system was unavailable.The operating costs of the satellite leveling system under the above three weather conditions decreased by more than 144.8 yuan/hm2 compared to those of the laser leveling system(CK)under sunny and calm weather conditions.The net income of one machine-team was more than 13762.9 yuan,which was 4190.1 yuan more than that of the laser leveling system(CK),greatly increasing by 42.4%.