Effect of Soil Matric Potential on Waxy Corn Growth under Drip Irrigation in Salinity Area
The decreasing of available farmland makes saline soil a valuable alternative land sources for agriculture in North West China. In order to obtain high yields and economic benefits, it is very stringent to develop suitable management procedures for farms to better cope with soil water moisture and salinity. A field experiment was carried out to investigate the effect of soil matric potential on waxy corn growth and water use under drip irrigation in saline soils of North West China in 2005. The experiment included five treatments, which controlled soil matric potential (SMP) at 20cm depth immediately under emitter higher than -5, -10, -15, -20, -25kPa. There were significant differences among the five treatments on waxy corn growth. The higher the target SMP value was, the higher the yields of waxy corn. Plant height, stem circumference, LAI and above-ground biomass all increased with increasing of SMP value, but the highest irrigation water use efficiency was achieved with SMP of-10kPa. The SMP of -10kPa at 20em depth immediately under drip emitter can be used as an indicator for corn drip irrigation scheduling on saline soil in the arid areas of North West China.
Waxy corn Drip irrigation Soil matric potential Salinity area
JIAO Yanping KANG Yaohu
Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijin Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijin
国际会议
2007 International Conference on Agriculture Engineering(2007年农业工程国际会议)
河北保定
英文
580-585
2007-10-20（万方平台首次上网日期，不代表论文的发表时间）