摘要
为了探寻马铃薯地下滴灌合理的灌溉计划拟定方法,进行了田间试验,试验布置了-10（D1）、-20（D2）、-30（D3）、-40（D4）、-50cm（D5）5个滴灌带埋设深度,研究同一土壤基质势控制条件下土壤水分的变化规律。结果显示,滴头横向距离0cm附近、20cm深度处的土壤基质势的变化趋势可以代表距离滴头横向距离0～70cm、深度为0～50cm土层内土壤基质势变化规律。可以将负压计埋设于滴头横向距离0cm附近、20cm深度处,监测马铃薯根系层土壤水分状况,制定灌溉计划。
In order to find a reasonable method to schedule underground drip irrigation for potato,an experiment was carried out to study soil moisture conditions at the same soil matric potential variation.The tests arranged five drip tape buried depth,namely-10（D1）,-20（D2）,-30（D3）,-40（D4）and-50cm（D5）.The results showed that：the trends of soil water potential near dripper in horizontal distance and at a depth of 20 cm could represent the trends of 0～70cm in horizontal and 0～50cm in depth.In order to monitor soil moisture conditions and schedule underground drip irrigation for potato,tensiometer could be installed in the soil near dripper in horizontal and 20 cm depth.
出处
《节水灌溉》
北大核心
2015年第8期11-14,19,共5页
Water Saving Irrigation
基金
国家高技术研究发展计划项目(2011AA100507)
国家科技支撑计划课题项目(2012BAD08B01)
关键词
马铃薯
地下滴灌
负压计
土壤基质势
potato
subsurface drip irrigation
tensionmeter
soil matric potential
