In allusion to test roadway in the zhang - luo second class highway and lin - chang freeway , through hydrologic analysis , hydraulic calculation and with the analysis of highway structure , the blue print of setting drainage system , construction technique and back - check experiment are presented 针对张罗二级公路试验段和临常一级公路试验段，进行了水文分析和水力计算，并结合路面结构分析，提出了排水系统的布设方案、施工技术方案和试验检测方案。
2.
In the third part , a comprehensive check experiment was made on percolation irrigation and furrow irrigation : the percolation irrigation is superior to the furrow irrigation for such advantages as saving water , saving energy , increasing production , raising air temperature and ground temperature inside the shelf , lowering air humidity inside the shelf and reducing plights , and ect 第三部分对棚室番茄渗灌和沟灌进行了全面的对比试验，通过试验可以得出渗灌较沟灌省水、节能、增产、提高棚室空气温度和地温、降低棚室空气湿度、减少病虫害等一系列优点。
您当前位置：